Differentiate Effort variance vs Schedule variance?

Hi Abhijeet, Effort Variance is the difference between planned efforts and the actual effort spent on the activities. Schedule Variance is the difference between the planned milestone dates and the actual milestone dates. Both these look similar but are slightly different. Let me take an example and explain to you. Assume that you estimate something can be done in 3 days time starting from tomorrow i.e. 7 Jan 2009. So your schedule says that the activity will be completed on 11th Jan considering that 9th and 10th are weekend which is off. So though your effort says 3 days your actual schedule says 5 days. Now assume that you actually finish the task on 11th Jan 2009, but instead of one person, two person did it, so then you actually have 0 schedule variance, but your effort variance is 100% because you had estimated 3 days of effort, but 2 persons worked for 3 days resulting in 6 days of effort. I hope that clarifies the difference. Cheers! Ram

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