Parametric Estimating is a technique that calculates estimates by leveraging statistical relationships between variables. In essence, it applies a mathematical model to predict costs, durations,…
Posts tagged as “Estimating”
Analogous estimating is a project management technique that uses information from similar projects to estimate the cost, duration, and resources required for a new project.…
The Delphi technique uses several subject matter experts (SMEs) to develop independent estimates, document assumptions, and discuss the differences. Prerequisites Steps Repeat this procedure for…
Estimates are just that, an estimate of future costs. The accuracy of estimates can vary greatly and generally range between -50% to +50% of the…
Three Point Estimates can improve the accuracy of an estimate by considering uncertainty and risk. PERT uses 3 estimates to define a range for an…
Here are three techniques for estimating project costs. Top Down Bottom Up Parametric
I’ve mentioned it before, but it’s worth repeating. We do not pad work estimates. Padding work estimates means adding more time or cost to project…
A colleague caught me off-guard the other day when he said he could calculate time. It took me a minute, but I got it. He…
Douglas Hofstadter’s law of programming simply states that, “It always takes longer than you think, even when you take into account Hofstadter’s law.” While Hofstadter…
Padding is extra time added to work estimates or schedules. Some might call it a cushion that is added to estimates when project managers do…