Contingency Planning · Slippage · Component
The ratio
Actual over planned, as a single number — the most useful figure in planning and one almost nobody has.
The deliverable
What it is
The ratio is what converts a record into something usable. An organisation running at 1.4 can plan at 1.4 and be right.
It is stable over time and varies by type of work, which is why it should be split rather than averaged into one figure.
One level in
What it is made of
Each element is a constituent part of the component. Follow one to see the attributes it carries.
Most organisations run between 1.3 and 2.0 and expect the answer to be 1.1.