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
7
Reg
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
σ
n
n
=
Σ
(
x
–
o
)
2
x
σ
n
–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:
1
Σ
x
2
Sum of squares of the sample data
2
Σ
x
Sum of the sample data
Var Sub-menu (
17
(S-MENU)
5
(Var))
Select this
When you want to obtain this:
menu item:
1
n
Number of samples
2
o
Mean of the sample data
3
x
σ
n
Population standard deviation
4
x
σ
n
–1
Sample standard deviation