The manhour estimate for test and evaluation was developed u

The man-hour estimate for test and evaluation was developed using expert opinion to come up with optimistic, pessimistic and most likely positions. This resulted in a triangular distribution with a minimum estimate of 25 hours, a most likely estimate of 50 hours, and an expected maximum of no more than 60 hours. Calculate the variance of this distribution. 95 92604 125 54

Solution

variance= [ 25^2 + 50^2 + 60^2 - (25*50) - (50*60) - ( 25*60) ] / 18...... = 54.16667.......