Which estimating technique decomposes the work into lower,more detailed pieces,preferably the lowest level of WBS work elements,for which estimates are prepared and then aggregates them into a total quantity for the project?
A) piece meal pricing
B) decomposition estimating
C) bottom-up estimating
D) grass roots estimating

Question

Which estimating technique decomposes the work into lower,more detailed pieces,preferably the lowest level of WBS work elements,for which estimates are prepared and then aggregates them into a total quantity for the project?​ 
A) piece meal pricing 
B) decomposition estimating 
C) bottom-up estimating 
D) grass roots estimating

Quizplus · Accepted Answer

Bottom-up estimating involves breaking down the work into smaller, more detailed pieces (preferably down to the lowest level of the WBS), estimating the effort or cost for each piece, and then aggregating them up into a total quantity for the project. This is a more accurate and reliable technique than piece meal pricing or grass roots estimating because it takes into account all of the individual components of the project. Decomposition estimating is a more general term that could refer to any technique that breaks down the work into smaller pieces, so it is not as specific to the bottom-up approach.

Which Estimating Technique Decomposes the Work into Lower,more Detailed Pieces,preferably