Probability Distributions, страница 3

exceeding 0,0625899 is less than or equal to 0,01.

Random Numbers

-------------To generate random numbers from the selected distribution,

use the save button on the analysis toolbar.

Random numbers to be generated: 100

The StatAdvisor

--------------This pane allows you to specify the number of observations desired

in a random sample from the F distribution.  You set the number of

observations by pressing the alternate mouse button and selecting Pane

Options.  After setting the size, press the Save Results button on the

analysis toolbar.  This allows you to save random samples from the

specified distribution in columns of the current data file.  Every

time you select Save Results, a new random sample will be generated.

Probability Distributions

Probability Distributions

------------------------Distribution: Student's t

Parameters:     Deg. of freedom

Dist. 1      4              

Dist. 2                     

Dist. 3                      

Dist. 4                     

Dist. 5                     

The StatAdvisor

--------------This procedure allows you to analyze any of 24 probability

distributions.  Currently, the Student's t distribution has been

selected.  You can create various plots, compute tail areas and

critical values, and generate random numbers from the selected

distribution.  Up to five sets of parameters can be specified by

pressing the alternate mouse button and selecting Analysis Options.

Cumulative Distribution

----------------------Distribution: Student's t

Lower Tail Area (<)

Variable      Dist. 1       Dist. 2       Dist. 3       Dist. 4       Dist. 5

0             0,5                                                                   

Probability Density

Variable      Dist. 1       Dist. 2       Dist. 3       Dist. 4       Dist. 5

0             0,374996                                                              

Upper Tail Area (>)

Variable      Dist. 1       Dist. 2       Dist. 3       Dist. 4       Dist. 5

0             0,5                                                                  

The StatAdvisor

--------------This pane evaluates the cumulative Student's t distribution.  It

will calculate the tail areas for up to 5 critical values of the

distribution.  It will also calculate the probability density or mass

function.  For example, the output indicates that, for the first

distribution specified, the probability of obtaining a value less than

0,0 is 0,5.  Also, the probability of obtaining a value greater than

0,0 is 0,5.  The height of the probability density function at 0,0 is

0,374996. 

Inverse CDF

----------Distribution: Student's t

CDF           Dist. 1       Dist. 2       Dist. 3       Dist. 4       Dist. 5

0,01          -3,74695     

0,1           -1,53321     

0,5           0            

0,9           1,53321      

0,99          3,74695      

The StatAdvisor

--------------This pane finds critical values for the Student's t distribution.

You may specify up to 5 five tail areas.  The critical value is

defined as the largest value for the Student's t distribution such

that the probability of not exceeding that value does not exceed the

area specified.  For example, the output indicates that, for the first

distribution specified, -3,74695 is the largest value such that the

probability of not exceeding -3,74695 is less than or equal to 0,01.

Random Numbers

-------------To generate random numbers from the selected distribution,

use the save button on the analysis toolbar.

Random numbers to be generated: 100

The StatAdvisor

--------------This pane allows you to specify the number of observations desired

in a random sample from the Student's t distribution.  You set the