7-11-7

Distributions

SProgram, eActivity or Main Application

Command: TPD :

Command Syntax

x value, df value

Input Example:

TPD 2,5

Student- t Cumulative Distribution

Menu: [Distribution]-[Student-T CD]

Description: This command calculates the probability of the Student-tdistribution data falling between a and b.

 

 df + 1

b

 

df+1

a : lower bound (Lower)

p =

 

 

2

 

x

2

 

2

 

 

 

1+

 

 

dx

b : upper bound (Upper)

 

 

 

 

 

 

 

 

 

df

 

 

df

 

 

 

 



 

.df

a

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Definition of Terms

Lower : lower bound

Upper : upper bound

df : degrees of freedom (df > 0)

Calculation Result Output

prob : Student-tdistribution probability p

t Low : lower bound value you input

t Up : upper bound value you input

Example

Lower bound : 1.5 (upper bound : δ)

Degrees of freedom : 18

Statistics Wizard Operation

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

(2)Select [Student-T CD] and then tap [Next >>].

(3)Input values.

(4)Tap [Next >>].

(5)To display the graph, tap .

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