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Distribution Command List
Important!
Though list data can be used within the argument of the Distribution function (page 2-8-48),
list data cannot be used in the argument of the Statistics Wizard operations described here
or in operations that use the Distribution command in the applications.
For details about using list data within the Distribution function, see “Specifying Arguments
within the Distribution Function” (page 2-8-48).
I
Normal Distribution
Normal Probability Density
Menu: [Distribution]-[Normal PD]
Description: This command calculates the probability density of normal distribution from a
specified
x
value. Normal probability density is used for normal distribution.
(
σ
> 0)
Definition of Terms
x
: data value
σ
: population standard deviation (
σ
> 0)
μ
: population mean
Specifying
σ
= 1 and
μ
= 0 produces standard normal distribution.
Calculation Result Output
prob
: normal probability density
Example
Data : 37.5
Population standard deviation : 2
Population mean : 35
• Statistics Wizard Operation
(1) On the menu bar, tap [Calc] and then [Distribution].
(2) Select [Normal PD] and then tap [Next >>].
(3) Input values.
(4) Tap [Next >>].
(5) To display the graph, tap
.
2
f (x) =
1
e
–
2
2
(x – )
2
2
f (x) =
1
e
–
2
2
(x – )
2
7-11-3
Distributions