Casio FX-991ES User Guide - Page 50

Single-variable 1-VAR Statistical Calculation, Commands

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Single-variable Menu Item Select this menu item: When you want to do this: 7Distr Display the Distr sub-menu of commands for normal distribution calculations • For more information, see "Distr Sub-menu". Paired-variable Menu Item Select this menu item: When you want to do this: 7Reg Display the Reg sub-menu of commands for regression calculations • For details see "Commands when Linear Regression Calculation (A+BX) Is Selected" and "Commands when Quadratic Regression Calculation (_+CX2) Is Selected". 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 for information about the calculation formula used for each command. Sum Sub-menu (11(STAT)4(Sum)) Select this menu item: 1Σx2 2Σx When you want to obtain this: Sum of squares of the sample data Sum of the sample data Var Sub-menu (11(STAT)5(Var)) Select this menu item: When you want to obtain this: 1n 2o 3xσn 4xσn-1 Number of samples Mean of the sample data Population standard deviation Sample standard deviation MinMax Sub-menu (11(STAT)6(MinMax)) Select this menu item: 1minX 2maxX When you want to obtain this: Minimum value Maximum value E-48

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E-48
Single-variable Menu Item
Select this
When you want to do this:
menu item:
Display the Distr sub-menu of commands for
normal distribution calculations
7
Distr
• For more information, see “Distr Sub-menu”.
Paired-variable Menu Item
Select this
When you want to do this:
menu item:
Display the Reg sub-menu of commands for
regression calculations
7
Reg
• For details see “Commands when Linear
Regression Calculation (A+BX) Is Selected” and
“Commands when Quadratic Regression
Calculation (_+CX
2
) Is Selected”.
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