Standard Error Of The Mean - HP 12c Platinum Reference Manual

Find the power curve formulas that best expresses h as a function of t (h = At
12c platinum / 12C
RPN Keystrokes
fCLEARH
30g°
2g°_
50g°
2.5g°_
90g°
3.5g°_
130g°
4g°_
150g°
4.5g°_
gR~
0gRg>
1gR0gR
~d-
The formula that best expresses h as a function of t is
We know, as Galileo did not, that in fact h is proportional to t

Standard Error of the Mean

The standard error of the mean is a measure of how reliable the mean of a sample (X) is
as an estimator of the mean of the population from which the sample was drawn.
To calculate the standard error of the mean:
1. Press f CLEAR H .
2. If you are summing one set of numbers, key in the first number and press _ .
Continue until you have entered all of the values.
3. If you are summing two sets of numbers, key in the y-value and press \ ( ³ ), key
in the x-value and press _ . Continue until you have entered all of the values.
4. Press gÖ to obtain the mean of the x-values.
RPN Mode:
5. Press gv: 1 grz to obtain the standard error of the mean of the x-values.
6. Alternatively, press gv~: 1 grz to obtain the standard error for the
mean of the y-values.
12c platinum
ALG Keystrokes
fCLEARH
30g°
2g°_
50g°
2.5g°_
90g°
3.5g°_
130g°
4g°_
150g°
4.5g°_
gR~
0gRg>
1gR0gR
-~d³
h =
Display
First pair data input.
1.00
Second pair data input.
2.00
Third pair data input.
3.00
Fourth pair data input.
4.00
Fifth pair data input.
5.00
Correlation coefficient
1.00
(between In y and ln x).
Value of A.
7.72
Value of B.
1.99
. 1 99
. 7 t 72
2
Statistics 105
B
).
Comments
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