6-7-8

Distribution

u Student-tDistribution Probability

Student-tdistribution probability calculates the probability of t distribution data falling between two specific values.

 

Γ df + 1

∫

b

 

 

 

–

df +1

 

a : lower boundary

p =

2

 

 

x

2

2

 

b : upper boundary

 

1+

 

 

dx

 

df

 

df

 

 

 

 

 

 

a

 

 

 

 

 

 

 

 

Γ 2 π df

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Perform the following key operations from the statistical data list.

5(DIST)

2(t)

2(tcd)

Data is specified using parameter specification. The following shows the meaning of each item.

Lower ..........................

lower boundary

Upper ..........................

upper boundary

df .................................

degrees of freedom (df > 0)

Save Res ....................

list for storage of calculation results (None or List 1 to 26)

Execute .......................

executes a calculation

After setting all the parameters, use c to move the highlighting to “Execute” and then press the function key shown below to perform the calculation.

• 1(CALC) ... Performs the calculation.

#There is no graphing for Student-tdistribution probability.

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