Answer: Apportionment
Explanation: Apportionment is also known as analogous estimating which is used when projects closely follow past projects in features and costs. As a result, in addition to good historical data, estimates regarding project feature, cost and duration can be made quickly, with little effort and reasonable accuracy to various segments of the current project. The method of apportionment is very common in projects that are relatively standard, but with little variation or customisation.