Generating random normally distributed data

Minitab can be used to generate random data. In this example, we use Minitab to create a random set of data that is normally distributed.

Procedure

  1. Select Calc >> Random Data >> Normal...
  2. In the box labeled Generate ... rows of data, type in the number of rows of data that you would like to generate.
  3. In the box labeled Store in Column(s):, enter the column name(s) where you want Minitab to store the data.
  4. In the boxes labeled Mean: and Standard deviation:, type in the mean and standard deviation of your desired normal distribution. The default is the standard normal distribution with mean = 0 and standard deviation = 1.
  5. Select OK. The new data will appear in the worksheet window.

Example

First, generate a column of 200 random numbers from a standard normal distribution with a mean of 0 and a standard deviation of 1. Then, generate 20 more columns, each containing 200 random numbers from a standard normal distribution with a mean of 0 and a standard deviation of 1.

Minitab dialog boxes

dialog box

 

dialog box

Resulting Minitab Worksheet

Based on the first dialog box above, one column (C1) of (standard) normally distributed data appears in the worksheet:

Based on the second dialog box above, 20 columns (C2-C21) of (standard) normally distributed data appears in the worksheet:

Close this window when finished.

© 2004 The Pennsylvania State University. All rights reserved.
Materials developed by Dr. Laura J. Simon (Lecturer, Penn State Department of Statistics).