4. PRESENTING FORECASTED DATA › 4.6 Case Studies › 4.6.4 Tracking Previous Forecasts of Resource Utilization › 4.6.4.1 Problem Description

4.6.4.1 Problem Description

Data for channel 5 SIO counts was collected monthly,
beginning in September 1985.  As part of a regular capacity
management program, projections are made quarterly, beginning
in March 1986.  Each projection is based on the previous six
months' historical values.  By the time we are ready to
produce the June 1986 quarterly report, the capacity planning
forecast file contains multiple forecasts (one for each
quarter since March 1985), each representing a forecast based
on the previous six months of data.

The object of the June 1986 quarterly report is to show the
current projection for channel 5 SIO counts and to track the
projection from the previous quarter against the more recent
actual observations.