Which of the following statements are true regarding cost estimating techniques?
A. None of the choices are true
B. Bottom up estimating is a technique that uses statistical relationship between historical data and other variables to calculate a cost estimate.
C. Analogous estimating is generally more costly than other techniques but produces more accurate estimates
D. Parametric estimates involves estimating the cots of individual work packages at the lowest level of detail, and "rolling up" and summarizing the costs
at higher levels
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