Two tables are included
which identify the common terminology used for Earned Schedule
(ES). Table 1 indicates the accepted EVM terminology for cost
and then displays, comparatively, the ES terminology for an
analogous measure or indicator.
The second table breaks down the ES terminology to measures,
indicators, and predictors. The terminology depicted in this
table has a few terms requiring definition:
PD = Planned Duration
ED = Estimated Duration
PF(t) = Performance Factor (time-based)
The time-based performance factor is analogous to the PF used
in the EVM IEAC equation.