Annual sales forecasts can be tricky to estimate. Hats Over Yonder, Inc. has historically found that the precision of estimates is not great. They have come up with an estimated table of best, base, and worst-case scenarios for NPV based on potential errors in estimation precision: scenario probability NPV best 0.3 350 base 0.4 150 worst 0.3 -20 Find the Expected NPV (EV), the standard deviation of the NPV (), and the Coefficient of Variation (CVNPV).