Probability Distributions, страница 2

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

defined as the largest value for the chi-square 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, 0,297109 is the largest value such that the

probability of not exceeding 0,297109 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 chi-square 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: F (variance ratio)

Parameters:     Numerator d.f   Denominator d.f.

Dist. 1      4               4              

Dist. 2                                     

Dist. 3                                     

Dist. 4                                     

Dist. 5                                     

The StatAdvisor

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

distributions.  Currently, the F 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: F (variance ratio)

Lower Tail Area (<)

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

0             0,0                                                                  

Probability Density

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

0             0,0                                                                  

Upper Tail Area (>)

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

0             1,0                                                                  

The StatAdvisor

--------------This pane evaluates the cumulative F 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 0,0.  Also, the probability of obtaining a value greater than

0,0 is 1,0.  The height of the probability density function at 0,0 is

0,0. 

Inverse CDF

----------Distribution: F (variance ratio)

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

0,01          0,0625899    

0,1           0,243472     

0,5           1,0          

0,9           4,10725      

0,99          15,977       

The StatAdvisor

--------------This pane finds critical values for the F distribution.  You may

specify up to 5 five tail areas.  The critical value is defined as the

largest value for the F 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,

0,0625899 is the largest value such that the probability of not