7-11-3

Distributions

Distribution Command List

kNormal 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.

f (x) =

1

 

e

(x )2

(σ > 0)

 

2σ 2

 

 

σ

 

 

2π

 

 

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 [NormalPD] and then tap [Next >>].

(3)Input values.

(4)Tap [Next >>].

(5)To display the graph, tap $.

uProgram, eActivity or Main Application

Command: NormPD

Command Syntax

x value, σ value, μ value

Input Example:

NormPD 37.5,2,35

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