Which estimating technique uses the actual cost of previous similar projects as a basis for estimating the cost of the current project?

A.
Analogous

B.
Parametric

C.
Bottom-up

D.
Top-down

Explanation:
Analogous
One of the estimation common used in project management is the “Analogous Estimation”. What exactly is Analogous Estimation?
It is also known as “Top Down” Estimation.
It uses estimations from previous activities to estimate future durations. The validity of duration estimates derived using this method depends on:
– historical information
– similarity of the historical projects
– expert judgement