Casio FX-730P Owner's Manual page 48

38
CHAPTER 2 Manual Operations
• Statistics
Output
Statistics can be obtained by STAT LIST, STAT LIST 1, STAT LIST 2, EOX
and EOY commands. This computer allows . the calculation of the following
statistics:
Statistics Formula
n
Number of statistical data processed
n
LX
Sum of x data
LX
Ly Sum of y data Ly
LX
t 2
Sum
of squares of x data
LX 2
LY
t 2 Sum of squares of y data
Ly2
LXY
Sum of products of x andy data
LXY
Lx/n Mean
of x
data
LX
- -
n
Ly/n
Mean
of y data
LY
n
xan-1
Sample standard deviation of x data
JnLx
2 -
(Lx) 2
n(n-1)
yan-1
Sample standard deviation of y data
JnLY
2
-(Ly) 2
n(n - 1)
X<Tn
Population standard deviation
of x
data
JnLx
2
-(Lx) 2
n2
y<Tn
Population standard deviation of y data
JnLY
2 -
(Ly) 2
n 2
Linear regression constant term
LY-b. LX
a
n
b
Linear regression coefficient
nLxY-Lx ·LY
nLx
2
- ( LxF
nZ.xy-z,x. z,y
r Correlation coefficient
/ 1nz.x
2
-
(Z,x) 'I ln'Z.Y
2
-
(Z.Y)
2
1
EOX
Estimated x value for a given y value
EOX(Y) =~
b
EOY
Estimated
y
value for a
given x value
EOY<x) =a+x·b