To calculate the coefficient of correlation using the Texas Instruments BA II PLUS:

1. Enter the data into the calculator:
- Press 2nd then DATA to enter the statistics mode.
- Input the X and Y values.

2. Compute the correlation coefficient:
- Press 2nd then STAT to access the statistics calculations.
- Scroll to find the correlation coefficient (denoted as "r").

The "r" value is computed based on the definition:
r = Cov(X, Y) / (Sx * Sy)
where Cov(X, Y) is the covariance, and Sx and Sy are the sample standard deviations.

The "r" key is not explicitly present on the keypad. Instead, it is accessed through the 2nd STAT menu under statistics calculations.

This answer is automatically generated

Summary of Contents for Texas Instruments BA II PLUS

Page 1 BA II PLUS™ Calculator...
Page 2 "as-is" basis. In no event shall Texas Instruments be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the...
Page 3 • Consult the dealer or an experienced radio/television technician for help. Caution: Any changes or modifications to this equipment not expressly approved by Texas Instruments may void your authority to operate the equipment. © 2004-2019 Texas Instruments Incorporated...
Page 4: Table Of Contents
Contents Overview of Calculator Operations Turning On the Calculator Turning Off the Calculator Selecting 2nd Functions Reading the Display Setting Calculator Formats Resetting the Calculator Clearing Calculator Entries and Memories Correcting Entry Errors Math Operations Memory Operations Calculations Using Constants Last Answer Feature Using Worksheets: Tools for Financial Solutions Time-Value-of-Money and Amortization Worksheets...
Page 5 Deleting Cash Flows Inserting Cash Flows Computing Cash Flows Example: Solving for Unequal Cash Flows Example: Value of a Lease with Uneven Payments Bond Worksheet Bond Worksheet Variables Bond Worksheet Terminology Entering Bond Data and Computing Results Example: Computing Bond Price and Accrued Interest Depreciation Worksheet Depreciation Worksheet Variables Entering Data and Computing Results...
Page 6 General Information Contact TI Support Service and Warranty Information...
Page 7: Overview Of Calculator Operations
Overview of Calculator Operations This chapter describes the basic operation of your BA II PLUS™ calculator, including how to: • Turn on and turn off the calculator • Select second functions • Read the display and set calculator formats •...
Page 8: Selecting 2Nd Functions
Automatic Power Down™ (APD™) Feature To prolong battery life, the Automatic Power Down (APD) feature turns off the calculator automatically after about five minutes of inactivity. The next time you press $, the calculator turns on exactly as you left it, saving display settings and stored memory and any pending operations or error conditions.
Page 9 Indicator Meaning Press a key to select its inverse trigonometric function. Press a key to select its hyperbolic function. Press C to compute a value for the displayed variable. COMPUTE Press ! to assign the displayed value to the displayed ENTER variable.
Page 10: Setting Calculator Formats
Setting Calculator Formats You can change these calculator formats: To Select Press Display Default Number of 0–9 (Press 9 & decimal for floating- places decimal) (degrees) Angle units (radians) (mm-dd-yyyy) Dates (dd-mm-yyyy) (1,000.00 ) Number separators (1.000,00) (chain) Calculation (algebraic AOS é...
Page 11 Choosing the Number of Decimal Places Displayed The calculator stores numeric values internally to an accuracy of 13 digits, but you can specify the number of decimal places you want to display. The calculator displays up to 10 digits with the floating-decimal option. Results exceeding 10 digits appear in scientific notation.
Page 12: Resetting The Calculator
Resetting the Calculator Resetting the calculator: • Clears the display, all 10 memories, any unfinished calculations, and all worksheet data. • Restores all default settings • Returns operation to the standard-calculator mode Because the calculator includes alternative methods that let you clear data selectively, use reset carefully to avoid losing data needlessly.
Page 13: Correcting Entry Errors
To clear Press keyed in An incorrect entry, error condition, or error message & z The prompted worksheet and reset default values & | Calculator format settings and reset default values & z • Out of the prompted worksheet and return to standard-calculator mode &...
Page 14: Math Operations
Press Display < Begin the expression 3.00 Enter a number 1234.86 1,234.86 Erase the entry error 1,234. Key in the correct number 1,234.56 Compute the result 3,703.68 Math Operations When you select the chain ( Chn ) calculation method, the calculator evaluates mathematical expressions (for example, 3 + 2 Q 4) in the order that you enter them.
Page 15 Press Display Square 6.3 39.69 Find number of combinations where: & s 5 N 2,598,960.00 n = 52, r = 5 Find number of permutations where: & m 3 N 336.00 n = 8, r = 3 These operations do not require you to press N to complete. Press Display 15.5...
Page 16 Press Display & c 8 f Find hyperbolic arctangent: tanh (.5) 0.55 * The random number you generate might be different. ** Angles can be computed in degrees or radians. Examples show angles in degrees. (See: Choosing the Angle Units). Universal Power ;...
Page 17 Combinations & s The calculator computes the number of combinations of n items taken r at a time. Both the variables must be greater than 0. Permutations & m The calculator computes the number of permutations of n items taken r at a time.
Page 18: Memory Operations
Scientific Notation ; When you compute a value in the standard-decimal format that is either too large or small to be displayed, the calculator displays it in scientific notation, that is, a base value (or mantissa ), followed by a blank space, followed by an exponent.
Page 19 Memory Examples Press Clear memory 4 (by storing a zero value in it) Store 14.95 in memory 3 ( M3 ) 14.95 Recall a value from memory 7 ( M7 ) Memory Arithmetic Using memory arithmetic, you can perform a calculation with a stored value and store the result with a single operation.
Page 20: Calculations Using Constants
Calculations Using Constants To store a constant for use in repetitive calculations, enter a number and an operation, and then press & `. To use the stored constant, key in a value and press N. Pressing a key other than a number or N clears the Note: constant.
Page 21: Last Answer Feature
* The letter c denotes the constant value. ** Repeat constant calculations with n N. Last Answer Feature Use the Last Answer ( ANS ) feature with problems that call repeatedly for the same value or to copy a value: •...
Page 22: Using Worksheets: Tools For Financial Solutions
Using Worksheets: Tools for Financial Solutions The calculator contains worksheets with embedded formulas to solve specific problems. You apply settings or assign known values to worksheet variables and then compute the unknown value. Changing the values lets you ask what if questions and compare results.
Page 23 To select Function Press regression analysis options Percent Computes percent change, & q Change/Compound compound interest, and cost- Interest worksheet sell markup Converts interest rates Interest Conversion between nominal rate (or & v worksheet annual percentage rate) and annual effective rate Computes number of days between two dates, or date/day &...
Page 24 Accessing Prompted-Worksheet Variables After you access a worksheet, press # or " to select variables. For example, press & \ to access the Amortization worksheet, and then press # or " to select the amortization variables ( P1 , P2 , BAL , PRN , INT ). See: TVM and Amortization Worksheet Variables.
Page 25 Compute-Only Variables You cannot enter values manually for compute-only variables, for example, net present value ( NPV ). To compute a value, display a compute-only variable and press C. The calculator computes and displays the value based on the values of other variables. When you display a compute-only variable, the COMPUTE indicator reminds you to press C to compute its value.
Page 26 Selecting Worksheet Settings Many prompted worksheets contain variables consisting of two or more options, or settings (for example, the Date worksheet ACT / 360 variable). When you select variables with settings, the calculator displays the SET indicator and the current setting. To scroll through the settings of a variable, press &...
Page 27: Time-Value-Of-Money And Amortization Worksheets
Time-Value-of-Money and Amortization Worksheets Use the Time-Value-of-Money (TVM) variables to solve problems with equal and regular cash flows that are either all inflows or all outflows (for example, annuities, loans, mortgages, leases, and savings). For cash-flow problems with unequal cash flows, use the Cash Flow worksheet.
Page 28 Type of Variable Display Variable & ] End-of-period payments Setting Beginning-of-period & V Setting payments & Starting payment Enter-only Ending payment Enter-only Balance Auto-compute Principal paid Auto-compute Interest paid Auto-compute This guidebook categorizes calculator variables by the method of entry. Note: (See “Types of Worksheet Variables”).
Page 29 Variable Default Variable Default END/BGN • To reset only the TVM variables ( N , I/Y , PV , PMT , FV ) to default values, press & ^. • To reset P/Y and C/Y to default values, press & [ & z. •...
Page 30 Specifying Payments Due With Annuities Use END / BGN to specify whether the transaction is an ordinary annuity or an annuity due. Set END for ordinary annuities , in which payments occur at the end of each • payment period. (This category includes most loans.) Set BGN for annuities due , in which payments occur at the beginning of •...
Page 31: Entering Cash Inflows And Outflows
To compute a TVM value, press C and a TVM key in standard-calculator mode. Using [xP/Y] to Calculate a Value for N Key in the number of years, and then press & Z to multiply by the stored P/Y value. The total number of payments appears. To assign the displayed value to N for a TVM calculation, press ,.
Page 32: Example: Computing Basic Loan Interest
To generate the amortization schedule, repeat steps 2 through 5 for each range of payments. Generating an Amortization Schedule Automatically After entering the initial values for P1 and P2 , you can compute an amortization schedule automatically. Press & \. —...
Page 33: Examples: Computing Basic Loan Payments
Press Display using the payment multiplier Enter loan amount 75000 75,000.00 Enter payment amount 425.84 PMT= -425.84 Compute interest rate I/Y= 5.50 Answer: The interest rate is 5.5% per year. Examples: Computing Basic Loan Payments These examples show you how to compute basic loan payments on a $75,000 mortgage at 5.5% for 30 years.
Page 34: Examples: Computing Value In Savings
Press Display & [ 4 ! Set payments per year to 4 P/Y= 4.00 Return to standard-calculator & U 0.00 mode Enter number of payments & Z , 120.00 using payment multiplier Compute payment PMT= -1,279.82 The quarterly payments are $1,279.82. Answer: Examples: Computing Value in Savings These examples show you how to compute the future and present values of a...
Page 35: Example: Computing Present Value In Annuities
Answer: You must deposit $9,050.63. Example: Computing Present Value in Annuities The Furros Company purchased equipment providing an annual savings of $20,000 over 10 years. Assuming an annual discount rate of 10%, what is the present value of the savings using an ordinary annuity and an annuity due? Cost Savings for a Present-Value Ordinary Annuity Cost Savings for a Present-Value Annuity Due in a Leasing Agreement...
Page 36: Example: Computing Perpetual Annuities
Press Display Enter payment 20000 PMT= -20,000.00 Compute present value 122,891.34 (ordinary annuity) Set beginning-of-period & ] & V payments & U Return to calculator mode 0.00 Compute present value 135,180.48 (annuity due) The present value of the savings is $122,891.34 with an ordinary Answer: annuity and $135,180.48 with an annuity due.
Page 37: Example: Computing Present Value Of Variable Cash Flows
Perpetual ordinary annuity Perpetual annuity due Because the term (1 + I/Y / 100) in the present value annuity equations approaches zero as N increases, you can use these equations to solve for the present value of a perpetual annuity: •...
Page 38 Year Amount $5000 $7000 $8000 $10000 Given a 10% discount rate, does the present value of the cash flows exceed the original cost of $23,000? Press Display & } Set all variables to defaults 0.00 Enter interest rate per cash flow I/Y= 10.00 period...
Page 39: Example: Computing Present Value Of A Lease With Residual Value
Press Display D H 1 Sum to memory. 6,010.52 Enter 4th cash flow. 10000 -10,000.00 Enter period number. 4.00 Compute present value of 4th 6,830.13 cash flow. Sum to memory. D H 1 6,830.13 Recall total present value. 23,171.23 B 23000 N Subtract original cost.
Page 40: Example: Computing Other Monthly Payments
The total value of the machine is the present value of the residual value plus the present value of the lease payments. Press Display Set all variables to defaults. & } ! 0.00 & ] & Set beginning-of-period payments. Return to standard-calculator &...
Page 41: Example: Saving With Monthly Deposits
Press Display & } ! Set all variables to defaults. 0.00 & [ 12 Set payments per year to 12. P/Y= 12.00 Return to standard-calculator & U 0.00 mode Enter number of payments & Z , 24.00 using payment multiplier. Enter interest rate.
Page 42: Example: Computing Amount To Borrow And Down Payment
Press Display mode. Enter number of payments & Z , 240.00 using payment multiplier. Enter interest rate. I/Y= 7.50 Enter amount of payment. PMT= -200.00 Compute future value. 111,438.31 Answer: Depositing $200 at the beginning of each month for 20 years results in a future amount of $111,438.31.
Page 43: Example: Computing Regular Deposits For A Specified Future Amount
Press Display & } ! Set all variables to defaults. 0.00 & [ 12 Set payments per year to 12. P/Y= 12.00 Return to standard-calculator & U 0.00 mode Enter number of payments & Z , 48.00 using payment multiplier. Enter interest rate.
Page 44: Example: Computing Payments And Generating An Amortization Schedule
Press Display # 4 ! Set compounding periods to 4. C/Y= 4.00 Set beginning-of-period & ] & payments. Return to standard-calculator & U 0.00 mode. Enter number of deposits & Z , 120.00 using payment multiplier. Enter interest rate. I/Y= 0.50 Enter future value.
Page 45 Enter interest rate 6.125 I/Y= 6.13 Enter loan amount 120000 120,000.00 Compute payment PMT= -729.13 The computed monthly payment, or outflow, is $729.13. Answer: Generating an Amortization Schedule Generate an amortization schedule for the first three years of the loan. If the first payment is in April, the first year has nine payment periods.
Page 46: Example: Computing Payment, Interest, And Loan Balance After A Specified Payment
Example: Computing Payment, Interest, and Loan Balance After a Specified Payment A group of sellers considers financing the sale price of a property for $82,000 at 7% annual interest, amortized over a 30-year term with a balloon payment due after five years. They want to know: •...
Page 47 Press Display View interest paid after five INT= -27,920.72 years If the sellers financed the sale, they would receive: • Monthly payment: $545.55 for five years • Interest: $27,790.72 over the five years • Balloon payment: $77,187.72 Time-Value-of-Money and Amortization Worksheets 41...
Page 48: Cash Flow Worksheet
Cash Flow Worksheet Use the Cash Flow worksheet to solve problems with unequal cash flows. To solve problems with equal cash flows, use the TVM worksheet. Time-Value-of-Money and Amortization Worksheets • To access the Cash Flow worksheet and initial cash flow value ( CFo ), press '.
Page 49: Uneven And Grouped Cash Flows
Resetting Variables • To reset CFo , C nn , and F nn to default values, press ' and then & • To reset NPV to the default value, press ( and then & z. • To reset IRR to the default value, press ) and then & z. •...
Page 50: Entering Cash Flows
All cash-flow problems start with an initial cash flow labeled CFo . CFo is always a known, entered value. Grouped Cash Flows Cash-flow problems can contain cash flows with unique values as well as consecutive cash flows of equal value. Although you must enter unequal cash flows separately, you can enter groups of consecutive, equal cash flows simultaneously using the F nn variable.
Page 51: Deleting Cash Flows
Deleting Cash Flows When you delete a cash flow, the calculator decreases the number of subsequent cash flows automatically. The DEL indicator confirms that you can delete a cash flow. Press # or " until the cash flow you want to delete appears. Press &...
Page 52: Computing Cash Flows
Computing Cash Flows The calculator solves for these cash-flow values: • Net present value ( NPV) is the total present value of all cash flows, including inflows (cash received) and outflows (cash paid out). A positive value indicates a profitable investment. •...
Page 53: Example: Solving For Unequal Cash Flows
• When a sequence of cash flows has two or more sign changes: At least one solution exists. As many solutions can exist as there are sign changes. When more than one solution exists, the calculator displays the one closest to zero. Because the displayed solution has no financial meaning, you should use caution in making investment decisions based on an IRR computed for a cash-flow stream with more than one sign change.
Page 54 Year Cash Flow Number Cash Flow Estimate Purchase -$7,000 3,000 2–5 5,000 each year 4,000 As the time line shows, the cash flows are a combination of equal and unequal values. As an outflow, the initial cash flow ( CFo ) appears as a negative value. Entering Cash-Flow Data Press Display...
Page 55 Press Display 4,000.00 " Move to third cash flow. C03= & W Delete third cash flow. C03= 0.00 5,000.00 " " Move to second cash flow. C02= 4,000.00 & X 4000 ! C02= Insert new second cash flow. F02= 1.00 5,000.00 Move to next cash flow to C03=...
Page 56: Example: Value Of A Lease With Uneven Payments
Example: Value of a Lease with Uneven Payments A lease with an uneven payment schedule usually accommodates seasonal or other anticipated fluctuations in the lessee’s cash position. A 36-month lease has the following payment schedule and beginning-of- period payments. Number of Months Payment Amount $5000 $6000...
Page 57 Press Display Set all variables to defaults. & } ! 0.00 Select Cash Flow worksheet. CFo= 0.00 0.00 C01= Enter first group of cash flows. # 3 ! F01= 3.00 -5000.00 # 5000 S Enter second group of cash C02= 8.00 ! # 8 flows.
Page 58: Bond Worksheet
Bond Worksheet The Bond worksheet lets you compute bond price, yield to maturity or call, and accrued interest. You can also use the date functions to price bonds purchased on dates other than the coupon anniversary. To access the Bond worksheet, press & l. •...
Page 59 Variable Variable Display Type Accrued interest Auto-compute Resetting Bond Worksheet Variables To reset the Bond worksheet variables to default values, press & • z while in the Bond worksheet. Variable Default Variable Default 12-31-1990 ACT/360 2/Y, 1/Y 12-31-1990 • To reset all calculator variables and formats to default values, including the Bond worksheet variables, press &...
Page 60: Bond Worksheet Terminology
• For to call analysis, enter the call price for RV . Setting the Day-Count Method To display the day-count method, press # until ACT or 360 appears. To change the day-count method, press & V. Setting the Coupon Frequency To display the coupon frequency, press # until 1/Y or 2/Y appears.
Page 61: Entering Bond Data And Computing Results
Term Definition call premium. The calculator treats the redemption value in terms of dollars per $100 of par value. Settlement Date The date on which a bond is exchanged for funds. The rate of return earned from payments of principal and interest, with interest compounded semiannually at the stated yield rate.
Page 62: Example: Computing Bond Price And Accrued Interest
Key in a value for YLD and press !. Press # to display PRI , and then press C. The calculator displays the computed PRI value. Computing the Bond Yield (YLD) Press # until PRI appears. Key in a value for PRI and press !. Press # to display YLD , and then press C.
Page 63 Press Display # 8 ! Enter yield. YLD = 8.00 Compute price PRI = 98.56 View accrued interest. AI = 3.15 The bond price is $98.56 per 100. The accrued interest is $3.15 per Answer: 100. Bond Worksheet 57...
Page 64: Depreciation Worksheet
Depreciation Worksheet The Depreciation worksheet lets you generate a depreciation schedule using your choice of depreciation methods. • To access the Depreciation worksheet, press & • To change depreciation methods, press & V until the desired method appears. • To access other depreciation variables, press # or ".
Page 65 Variable Variable Display Type** Cost of the asset Enter only Salvage value of the asset Enter only Year to compute Enter only Depreciation for the year Auto-compute Remaining book value at the Auto-compute end of the year Remaining depreciable Auto-compute value * SLF and DBF are available only if you select the European format for dates or separators in numbers.
Page 66 • The calculator computes values for DEP, RBV , and RDV automatically when you press # to display each variable. Entering Values for DB and DBX If you choose either the declining balance ( DB ) or declining balance with crossover to SL ( DBX ) depreciation method, remember to enter a value representing the percent of declining balance for the DB or DBX variable.
Page 67: Entering Data And Computing Results
Entering Data and Computing Results Because the Depreciation worksheet stores values and settings until you either change them or clear the worksheet, you should not have to perform every step each time you work a problem. Selecting a Depreciation Method To access the Depreciation worksheet, press &...
Page 68: Example: Computing Straight-Line Depreciation
Example: Computing Straight-Line Depreciation In mid-March, a company begins depreciation of a commercial building with a 31½ year life and no salvage value. The building cost $1,000,000. Use the straight-line depreciation method to compute the depreciation expense, remaining book value, and remaining depreciable value for the first two years. Press Display Access Depreciation...
Page 69: Statistics Worksheet
Statistics Worksheet The Statistics worksheet performs analysis on one-and two-variable data with four regression analysis models. • To enter statistical data, press & j. • To choose a statistics calculation method and compute the results, press & k. • To access statistics variables, press # or ". Statistics Worksheet Variables Variable Variable...
Page 70 Variable Variable Display Type Predicted X value Predicted Y value Sum of X values G Y** Auto-compute G Y 2 ** Sum of X squared values Auto-compute Sum of Y values G XY** Auto-compute Sum of Y squared values Sum of XY products * nn represents the number of the current X or Y value.
Page 71: Regression Models
Analyzing Two-Variable Statistics You can choose from among these four regression-analysis methods: • • • • Computing Values Automatically Except for the predicted X' and Y' values, the calculator computes and displays values for statistics variables automatically when you access them. Using X' and Y' for Regression Predictions To use the X' and Y' variables for regression predictions, you either can enter a value for X' to compute Y' or enter a value for Y' to compute X' .
Page 72: Entering Statistical Data
Correlation Coefficient The calculator also determines r , the correlation coefficient, which measures the goodness of fit of the equation with the data. Generally: • The closer r is to 1 or -1, the better the fit. • The closer r is to zero, the worse the fit. Entering Statistical Data Because the Statistics worksheet lets you enter and display up to 50 data points, and then stores the values until you clear the worksheet or change the...
Page 73 The last selected statistics calculation method is displayed ( LIN , Ln , EXP , , or 1-V ). Press & V repeatedly until the statistics calculation method you want is displayed. If you are analyzing one-variable data, select 1-V . Press # to begin computing results.
Page 74: Other Worksheets
Other Worksheets The calculator also includes these worksheets: • Percent Change/Compound Interest worksheet (& q) • Interest Conversion worksheet (& v) • Date worksheet (& u) Profit Margin worksheet (& w) • Breakeven worksheet (& r) • Memory worksheet (& {) •...
Page 75 Resetting the Percent Change/Compound Interest Worksheet Variables • To reset the Percent Change/Compound Interest variables to default values, press & z while in the Percent Change/Compound Interest worksheet. Variable Default Variable Default • To reset default values for all calculator variables and formats, press & } !.
Page 76 To clear the worksheet, press & z. To enter values for the known variables, press # or " until the variable you want is displayed, then key in a value, and press !. (Do not enter a value for the variable you wish to solve.) •...
Page 77 Example: Computing Compound Interest You purchased stock in 1995 for $500. Five years later, you sell the stock for $750. What was the annual growth rate? Press Display Select Percent Change/Compound Interest & q Current value OLD= worksheet Enter stock purchase price OLD= 500.00 # 750 !
Page 78: Interest Conversion Worksheet
Interest Conversion Worksheet The Interest Conversion worksheet converts interest rates between nominal rate (or annual percentage rate) and annual effective rate. • To access the Interest Conversion worksheet, press & v. • To select interest conversion variables, press # or ". Interest Conversion Variables Variable Variable...
Page 79 Variable Default • To clear the NOM and EFF variables and reset default values without affecting C/Y , press & z in the Interest Conversion worksheet. Converting Variables You can convert a nominal rate to an annual effective rate or vice versa. Entering Values for Nom and EFF Enter a value for NOM or EFF as an annual rate.
Page 80: Date Worksheet
Press Display Compute annual effective " C EFF= 15.87 interest rate. A nominal interest rate of 15% compounded quarterly is equivalent to Answer: an annual effective interest rate of 15.87%. Date Worksheet Use the Date worksheet to find the number of days between two dates.
Page 81 Variable Default Variable Default 12-31-1990 Day-count 12-31-1990 method • To clear Date worksheet variables and reset default values without affecting the day-count method, press & z while in the Date worksheet. Entering Dates • The calculator assumes that DT1 is earlier than DT2 . •...
Page 82: Profit Margin Worksheet
Example: Computing Days between Dates A loan made on September 4, 2003 defers the first payment until November 1, 2003. How many days does the loan accrue interest before the first payment? Press Display Select Date worksheet & u DT1= 12-31-1990 Enter first date 9.0403...
Page 83 This guidebook categorizes calculator variables by their method of entry. Note: Gross Profit Margin and Markup The terms margin and markup often are used interchangeably, but each has a distinct meaning. • Gross profit margin is the difference between selling price and cost, expressed as a percentage of the selling price.
Page 84: Breakeven Worksheet
Breakeven Worksheet The Breakeven worksheet computes the breakeven point and sales level needed to earn a given profit by analyzing relationships between fixed costs, variable costs per unit, quantity, price, and profit. You operate at a loss until you reach the breakeven quantity (that is, total costs = total revenues).
Page 85 Computing Breakeven To access the Breakeven worksheet, press & r. The FC variable appears. Press # or " to select a known variable, key in the value, and press Repeat step 3 for each of the remaining known variables. To compute a value for the unknown variable, press # or " until the variable is displayed, and then press C The calculator displays the computed value.
Page 86: Memory Worksheet
Memory Worksheet The Memory worksheet lets you compare and recall stored values by accessing the calculator’s 10 memories. All memory variables are enter-only. Types of Worksheet Variables • To access the Memory worksheet, press & {. • To access memory variables, press " or #. You can access memories individually using Note: D, J, and the digit keys.
Page 87 • To clear all 10 memories at once, press & z. • To view the contents of the memories, press # or " once for each memory. • To store a value, select a memory ( M0-M9 ), key in a value, and press •...
Page 88: Appendix - Reference Information
APPENDIX - Reference Information This appendix includes supplemental information to help you use your BA II PLUS™ calculator: • Formulas • Error conditions • Accuracy information • IRR (internal-rate-of-return) calculations • Algebraic operating system (AOS™) • Battery information • In case of difficulty •...
Page 89 where: Gi = 1 + where: k = 0 for end-of-period payments k = l for beginning-of-period payments where: where: where: where: where: APPENDIX - Reference Information 83...
Page 90 where: where: where: Amortization If computing Let: Iterate from: then: where: round the diplay to the number or decimal places selected round to 12 decimal places PMT, PV, I/ Y Balance, principal, and interest are dependent on the values of pmt1 pmt2 84 APPENDIX - Reference Information...
Page 91 Cash Flow where: Net present value depends on the values of the initial cash flow ( subsequent cash flows ( ), frequency of each cash flow ), and the specified interest rate ( = 100 x where: satisfies Internal rate of return depends on the values of initial cash flow ( subsequent cash flows ( Bonds Price (given yield) with one coupon period or less to redemption:...
Page 92 where: PRI = dollar price per $100 par value RV = redemption value of the security per $100 par value (RV except in those cases where call or put features must be considered) R = annual interest rate (as a decimal; CPN_100) M = number of coupon periods per year standard for the particular security involved (set to 1 or 2 Bond worksheet) DSR = number of days from settlement date to...
Page 93 where: number of coupons payable between settlement date and redemption date (maturity date, call date, put date, etc.). (If this number contains a fraction, raise it to the next whole number; for example, 2.4 = 3.) number of days from settlement date DSC = to next coupon date summation counter...
Page 94 Straight-line depreciation First year: Last year or more: Sum-of-the-years’-digits depreciation First year: Last year or more: Declining-balance depreciation where: is for YR First year: Unless; ; then use , use 88 APPENDIX - Reference Information...
Page 95 If computing last year, Statistics Formulas apply to both Note: Standard deviation with weighting (s Standard deviation with -1 weighting (s Mean: Regressions Formulas apply to all regression models using transformed data. APPENDIX - Reference Information 89...
Page 96 Interest Rate Conversions where: where: Percent Change where: = old value = new value = percent change = number of periods Profit Margin Breakeven = profit where: = price = fixed cost 90 APPENDIX - Reference Information...
Page 97 = variable cost = quantity Days between Dates With the Date worksheet, you can enter or compute a date within the range January 1, 1980, through December 31, 2079. Actual/actual day-count method The method assumes the actual number of days per month and per year. Note: number of days II-number of days I (days between dates) =...
Page 98 30/360 day-count method The method assumes 30 days per month and 360 days per year. Note: 1 = month of first date where: 1 = day of first date 1 = year of first date 2 = month of second date 2 = day of second date 2 = year of second date 1 is 31, change...
Page 99: Error Messages
Error Messages To clear an error message, press P. Note: Error Possible Causes • A result is outside the calculator range (± 9.9999999999999E99). • Tried to divide by zero (can occur internally). Error 1 Overflow • Tried to compute 1/x when x is zero. •...
Page 100 Error Possible Causes • A calculation tried to use more than 8 pending operations operations. • Amortization worksheet: the value entered for P1 or is outside the range 1-9,999. • TVM worksheet: the P/Y or C/Y value 0. Cash Flow worksheet: the F nn value is outside the •...
Page 101: Accuracy Information
Error Possible Causes very complex problem involving many iterations. • Cash Flow worksheet: the calculator computed IRR for a complex problem with multiple sign changes Iteration limit or PB / DPB with no payback period based on input exceeded cash flow values. •...
Page 102: Aos™ (Algebraic Operating System) Calculations
0.3333333333333 Q 3 = 0.9999999999999 The calculator rounds the result and displays it as 1. This rounding enables the calculator to display the most accurate result. Although most calculations are accurate to within ±1 in the last displayed digit, higher-order mathematical functions use iterative calculations, in which inaccuracies can accumulate in the guard digits.
Page 103: In Case Of Difficulty
Turn off the calculator and turn it over with the back facing you. Using a small Phillips screwdriver, remove the four screws from the back cover. Carefully pry off the back cover. Using a small Phillips screwdriver, remove the screws from the metal battery cover and lift the cover off the battery.
Page 104 Difficulty Solution variable is set to zero. Select the worksheet again. Be sure the The display is blank; digits do battery is properly installed and not appear. replace, if necessary. The calculator does not Be sure you have selected the correct display the correct worksheet worksheet.
Page 105 General Information Contact TI Support education.ti.com/ti-cares Select your country for technical and other support resources. Service and Warranty Information education.ti.com/warranty Select your country for information about the length and terms of the warranty or about product service. Limited Warranty. This warranty does not affect your statutory rights. General Information 99...

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