Add Multiple Columns

To add more than one column to the design matrix, select the AddCol, Multiple Columns choices. You will then be asked the number of columns that you want to enter. To illustrate this process, start with the following matrix and add 2 columns.

The resulting design matrix would look like this after 2 columns had been added.

Note that the columns added are all zeros.

The Insert Multiple Columns inserts columns into the design matrix.