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Option Name
|
Description
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|---|---|
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Sampling
method
|
specifies the method
to use when sampling the data. Here are the valid values:
With replacement
specifies that when
a row is selected, it is removed from eligibility for subsequent selections.
This removal makes it impossible to select the same row more than
once.
Without replacement
specifies that when
a row is selected, it remains eligible for subsequent selections.
This eligibility makes it possible to select the same row more than
once. You can specify how multiple selections of the same row are
recorded in the output table.
|
|
Sample size and Sample
percent
|
specify the sample size
in the desired number of rows or in the desired percentage of input
rows. For example, if you specify 3% of rows and there are 400 input
rows, then the resulting sample has 12 rows.
Note: If you assign variables to
the Stratify by role, then the sample size
specification that you make here applies to each stratum rather than
to the entire input table.
|
|
Specify
the random seed
|
specifies the initial
seed for the generation of random numbers. This value must be an integer.
If you do not specify a random seed number, then a seed that is based
on the system clock is used to produce the sample.
|
|
Generate
a sample selection summary
|
generates a summary
table that includes the seed that was used to produce the sample.
By specifying this same seed later with the same input table, you
can reproduce the same sample.
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