E-48
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),
6
(MinMax), or
7
(Distr) on the STAT menu while a single-variable statistical
calculation type is selected.
See
Appendix
<#052> for information about the calculation
formula used for each command.
Sum Sub-menu (
1
1
(STAT)
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 (
1
1
(STAT)
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
MinMax Sub-menu (
1
1
(STAT)
6
(MinMax))
Select this
When you want to obtain this:
menu item:
1
minX
Minimum value
2
maxX
Maximum value
Distr Sub-menu (
1
1
(STAT)
7
(Distr))
1
P(
2
Q(
3
R(
4
'
t
This menu can be used to calculate the probability of standard normal
distribution. Normalized variate
t
is calculated with the expression
shown below, using the mean value (
o
) and population standard
deviation value (
x
σ
n
) obtained from the data input on the STAT editor
screen.