Random Sample Options
A random sample is created by choosing a sample of cases picked at random. The random sample is smaller than the set that it is based on. Using the smaller sample can result in improved performance of model build and apply. If the sample is representative of the whole set, results generated using the sample will be compatible with the results generated using the whole set.
You can specify:
- Sampling Type: Random or Stratified; for information about Stratified Samples, see How to Use Stratified Sampling.
- Create As: Table, the default, or view.
- Sample size: You can specify the number of cases or the percent of cases.
- Specify Random Seed: Use this selection to change the Random Seed used to generate the sample. The default value is 123456. The seed can be changed; the value of the seed must be greater than 99999. If you plan to repeat this operation, you must use the same random seed to get the same results.
When you are done, click OK to close the dialog and save any changes.
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