Use Generate Random Data to generate samples of random data from the distribution of your choice. Minitab offers several common distributions such as the normal distribution and the Poisson distribution.
You can use random data to demonstrate an analysis that you have not yet collected data for. You can also use random data to investigate a hypothetical situation using likely historical parameters.
If you want to generate a random sample of data from the data in your worksheet, rather than from a distribution, use Sample from Columns.