What is the formula to find the schedule performance index?

The schedule performance index shows how well the project is performing on schedule. It is found by dividing the earned value by the planned value. Schedule variance (SV) is a measure of schedule performance on a project. The variance notifies that the schedule is ahead or behind what was planned for this period in time. The schedule variance is calculated based on the following formula: SV = Earned Value (EV) - Planned Value (PV) If the resulting schedule is negative, it indicates that the project is behind schedule. A value greater than 0 shows that the project is ahead of the planned schedule. A value of 0 indicates that the project is right on target.

Answer option D is incorrect. EV-AC is the project's cost variance.

Answer option B is incorrect. EV/AC is the project's cost performance index.

Answer option A is incorrect. EV-PV is the project's schedule variance.