Under FRACAS in the Calculate window, the Mean Calculations page provides for computing as many as five different mean calculations. Mean calculations compute the mean (average) value for the selected field in a table. For example, you can compute a mean calculation for maintenance log labor rates or the costs associated with performing a maintenance action. By default, all calculations are cleared. You can click the Select All button or Clear All button to select or clear all calculations and then customize your selections from there. The following table describes the table columns on the Mean Calculations page.