Tip #69 | Don't debate the output of an estimate. Take the output as a given. Change the output only by changing the inputs and recomputing. |
Tip #70 | Focus on estimating size first. Then compute effort, schedule, cost, and features from the size estimate. |
Tip #71 | Reestimate. |
Tip #72 | Change from less accurate to more accurate estimation approaches as you work your way through a project. |
Tip #73 | When you are ready to hand out specific development task assignments, switch to bottom-up estimation. |
Tip #74 | When you reestimate in response to a missed deadline, base the new estimate on the project's actual progress, not on the project's planned progress. |
Tip #75 | Present your estimates in a way that allows you to tighten up your estimates as you move further into the project. |
Tip #76 | Communicate your plan to reestimate to other project stakeholders in advance. |