How Minitab denotes missing data

When a cell doesn't contain any data and is between other cells that do contain data, it is called a missing value. When a value is missing from a column of numeric or date/time data, Minitab denotes it with an asterisk. When a value is missing from a column of text data, Minitab denotes it with the word "Missing".

Note

If your data uses "-99" or some other value to identify missing values, you can use Data > Recode > To Numeric to change those values to asterisks. If you do not change the values, Minitab will use the incorrect values, which may result in misleading results.