Bottom Up Estimates, Future Proof Your Project

bottom up estimates

Since estimating efforts cost money, the time and detail devoted to bottom up estimates is an important decision. Yet, when estimating is considered, you as a project manager may hear statements such as these: Rough order of magnitude is good enough. Spending time on detailed estimating wastes money. Time is everything; our survival depends on…

Influencing time, resources and cost estimates quality

estimates

A typical statement in the field is the desire to “have a 95 percent probability of meeting time and cost estimates.” Past experience is a good starting point for developing time and cost estimates. But past experience estimates must almost always be refined by other considerations to reach the 95 percent probability level. Factors affecting…

Top Down Estimates

top down estimates

Since estimating efforts cost money, the time and detail devoted to estimating is an important decision. Yet, when bottom up or top down estimates are considered, you as a project manager may hear statements such as these: Rough order of magnitude is good enough. Spending time on detailed estimating wastes money. Time is everything; our…