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E-113
Paired-variable Menu Item
Select this
When you want to do this:
menu item:
Display the Reg sub-menu of commands
for regression calculations
• For details see “Commands when Lin-
ear Regression Calculation (A+BX) Is
7Reg
Selected” on page E-117 and “Com-
mands when Quadratic Regression
Calculation (_+CX
2
) Is Selected” on
page E-121.
A Single-variable (1-VAR) Statistical
Calculation Commands
The following are the commands that appear on the sub-
menus that appear when you select 4(Sum), 5(Var)
or 6(MinMax) on the STAT menu while a single-variable
statistical calculation type is selected.
Calculation formula used for each command
o
Σ
x
n
=
x
σn
n
=
Σ
(x – o)
2
xσn
–1
n – 1
=
Σ
(x – o)
2
Sum Sub-menu (17(S-MENU)4(Sum))
Select this
When you want to obtain this:
menu item:
1Σx
2
Sum of squares of the sample data
2Σx Sum of the sample data
Var Sub-menu (17(S-MENU)5(Var))
Select this
When you want to obtain this:
menu item:
1n Number of samples
2o Mean of the sample data
3xσn Population standard deviation
4xσn–1 Sample standard deviation