less reliable than parametric estimating and more costly top down estimating that is least reliable when the persons preparing the estimates don't have the required expertise QUESTION 3 Which of the following is not the right explanation on the Cost (Performance) Baseline? It is representative of the budget "cash flow" a time-phased budget used as a basis to measure, monitor, and control overall cost performance It is usually displayed in the form of an S-Curve It is developed by summing estimated costs by period QUESTION 4 Note that this problem descriptions are used for problems 4,5,6 and 7 . Task A is worth $400, is 95% complete and costs $395 so far. Task B is worth $350, is 90% complete, and actually cost $330. Task C is worth $275, is 100% complete, and has cost $310 so far. The total budget is $2500. What is the Cost Variance for the 0.937 0.946