10.14. Sampling Tool

Use the sampling tool to take a sample of a data set. This tool can take both a random sample of a given size or a periodic sample where, for example, every fourth value of the data set is taken to the sample.

To use this tool, first specify the data set by setting the "Input Range:" entry. Then select the sampling method which can be either periodic or random. Periodic sampling requires that you specify the period by typing a number to the "Period:" entry. For example, if you specify the period to be three then you will get a sample that has every third value of the original data set. Random sampling requires that you specify the size of the random sample in "Number of Samples:" entry. The size cannot be larger than the original data set since each value of the original data set is taken at most once to the sample.