7-11-9

Distributions

kχ2 Distribution

χ2 Probability Density

Menu: [Distribution]-[χ2PD]

Description: This command calculates the probability density of χ2 distribution from a specified x value.

 

 

 

1

 

1

 

df

 

df

–1 –

x

 

 

 

 

 

2

 

 

 

 

 

 

 

2

2

 

 

f (x) =

 

 

 

 

 

 

 

x

 

e

 

 

 

Γ

df

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

Definition of Terms

 

 

 

 

 

 

 

 

 

 

 

x :

data value

 

 

 

 

 

 

 

 

 

 

 

df

: degrees of freedom (positive integer)

Calculation Result Output

prob : χ2 probability density

Example

Data : 2

Degrees of freedom : 4

•Statistics Wizard Operation

(1)On the menu bar, tap [Calc] and then [Distribution].

(2)Select [χ2 PD] and then tap [Next >>].

(3)Input values.

(4)Tap [Next >>].

(5)To display the graph, tap $.

uProgram, eActivity or Main Application

Command: ChiPD

Command Syntax

x value, df value

Input Example:

ChiPD 2,4

20060301