Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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268
• Use
c
to scroll the list so you can view the items that run off the bottom of the
screen.
_
x
..................... mean of
x
List data
Σ x
................... sum of
x
List data
Σ
x
2
.................. sum of squares of
x
List data
x σ
n
.................. population standard deviation of
x
List data
x σ
n -1
................ sample standard deviation of
x
List data
n
..................... number of
x
List data items
_
y
..................... mean of
y
List data
Σ y
................... sum of
y
List data
Σ
y
2 .................. sum of squares of
y
List data
y σ
n
.................. population standard deviation of
y
List data
y σ
n -1
................ sample standard deviation of
y
List data
Σ
xy ..................
sum of the product of data stored in
x
List and
y
List
minX ............... minimum of
x
List data
maxX .............. maximum of
x
List data
minY ............... minimum of
y
List data
maxY .............. maximum of
y
List data
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.
• { COPY } ... {stores the displayed regression formula to the GRAPH Mode }
• {
DRAW
} ... {graphs the displayed regression formula}
1. Press
5
(COPY) to copy the regression formula that produced the displayed
data to the GRAPH Mode .
Note that you cannot edit regression formulas for graph formulas in the
GRAPH
Mode
.
2. Press
w
to save the copied graph formula and return to the previous
regression calculation result display.
18 - 4
Calculating and Graphing Paired-Variable Statistical Data