Casio fx-991ZA PLUS II - Page 54

(Var)
Display the Var sub-menu of commands for
calculating the mean, standard deviation, etc.
Single-variable:
(Distr)
Display the Distr sub-menu of commands for
normal distribution calculations
• For more information, see "Performing
Normal Distribution Calculations".
Paired-variable:
(Reg)
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 (_+CX
2
) Is Selected".
(MinMax)
Display the MinMax sub-menu of commands
for obtaining maximum and minimum values
Single-variable (1-VAR) Statistical Calculation Commands
Sum Sub-menu ( (STAT/DIST) (Sum))
Select this menu
item:
When you want to obtain this:
(∑x
2
)
Sum of squares of the sample data
(∑x)
Sum of the sample data
Var Sub-menu ( (STAT/DIST) (Var))
Select this menu
item:
When you want to obtain this:
(n)
Number of samples
(x) Mean of the sample data
(σ
x
) Population standard deviation
(s
x
) Sample standard deviation
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