trên thực tế, chúng tôi muốn chi tiết hơn về việc làm thế nào bạn mong đợi để có được kết quả. Bạn có thể cung cấp một phân tích để chứng minh cho yêu cầu bồi thường của bạn? Các biện pháp chủ quan của thành công sẽ không làm công việc | Chapter 5 TIP How far off do the numbers need to be between the final estimate and your actual costs before you take some action Usually 10 percent is the most allowed. However if you see a trend appearing usually meaning a trend of being over budget you should take a look at the reasons behind the variance before it reaches 10 percent. A word of advice Remember that there are projects where time is the most important of the constraints for the project. Remember Y2K In cases like those you must balance your need for cost control with the need for a time-definite project ending. There may be a trade-off in cost control for time constraints. As a project manager you must be aware of these trade-offs and be ready to justify changes in costs to the sponsor based on other considerations such as time and quality. Using a JPP Session to Estimate Duration Resource Requirements and Cost You have assembled the SMEs on your planning team so you have all the information you need to estimate activity duration in the JPP session. The methodology is simple. During the WBS exercise ask each subteam to provide activity duration estimates as part of their presentation. The subteam s presentation will then include the activity duration estimates they determined. Any disagreement can be resolved during the presentation. We have conducted many JPP sessions and have some advice for estimating activity duration during the JPP session. Namely Get it roughly right. Do not waste time deciding whether the duration is nine days or 10 days. By the time the activity is open for work the team will have a lot more knowledge about the activity and will be able to provide an improved estimate rendering the debate a waste of time. After some frustration with getting the planning team to move ahead quickly with estimates someone once remarked Are you 70 percent sure you are 80 percent right Good let s move on. Spend more effort on front-end activities than on back-end activities. As project work .
