Displaying Paired-Variable Statistical Results; Copying A Regression Graph Formula To The Graph Mode - Casio FX-7400G PLUS User Manual

Chapter 7 Statistical Graphs and Calculations
k k k k k Displaying Paired-Variable Statistical Results
Paired-variable statistics can be expressed as both graphs and parameter values.
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When these graphs are displayed, the menu at the bottom of the screen appears as
below.
Pressing 4 (2VAR) displays the following screen.
k k k k k Copying a Regression Graph Formula to the Graph Mode
After you perform a regression calculation, you can copy its formula to the GRAPH
Mode.
The following are the functions that are available in the function menu at the bottom
of the display while regression calculation results are on the screen.
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[
4(2VAR) ....... Paired-variable calculation result menu
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
Σ
x
.................... Sum of
Σ
x
2 .................. Sum of squares of
σ
x
.................. Population standard deviation of
n
x σ
................ Sample standard deviation of
n
-1
n
...................... Number of
_
y
...................... Mean of
Σ y
.................... Sum of
Σ y
.................. Sum of squares of
2
y σ
.................. Population standard deviation of
n
σ
y
................ Sample standard deviation of
n
-1
Σ xy ..................
Sum of the product of data stored in
minX ................ Minimum of
maxX ............... Maximum of
minY ................ Minimum of
maxY ............... Maximum of
x
List data
x
List data
x
List data
x
List data items
y
List data
y
List data
y
List data
x
List data
x
List data
y
List data
y
List data
1 2 3
x
List data
x
List data
y
List data
y
List data
x y
List and List
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