Casio fx-7400G, User Manual

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109
Statistical Graphs and Calculations Chapter 7
The following are the meanings of the above parameters.
a ......
Regression coefficient
b ......
Regression power
r ......
Correlation coefficient
k k k k k
Displaying Paired-Variable Statistical Results
Paired-variable statistics can be expressed as both graphs and parameter values.
When these graphs are displayed, the menu at the bottom of the screen appears as
below.
[
4 (2VAR) ...... Paired-variable calculation result menu
Pressing 4 (2VAR) displays the following screen.
4 (2VAR)
• Use
c
to scroll the list so you can view the items that run off the bottom of the
screen. The following describes the meaning of each of the parameters.
_
x
..................... Mean of
x
List data
#
x
................... Sum of
x
List data
#
x
2 .................. Sum of squares of
x
List data
x
"
n
.................. Population standard deviation of
x
List data
x
"
n -1
................ Sample standard deviation of
x
List data
n
..................... Number of
x
List data items
_
y
..................... Mean of
y
List data
#
y
................... Sum of
y
List data
#
y
2 .................. Sum of squares of
y
List data
y
"
n
.................. Population standard deviation of
y
List data
y
"
n -1
................ Sample standard deviation of
y
List data
#
xy ..................
Sum of
x
List and
y
List data
minX ............... Minimum of
x
List data
maxX .............. Maximum of
x
List data
minY ............... Minimum of
y
List data
maxY .............. Maximum of
y
List data
1 2 3 4
P.102
(G-Type)