What is the statistically sound way to find out if the the length of projects are decreasing over time ?
The obvious one is to just take an average of all finished projects each month and see a change. But at the start of records it will be unstable and as you get to the present it will become more and more stable and harder to move the average.
What is the statistically sound way to find out if the the length of projects are decreasing over time ?
The obvious one is to just take an average of all finished projects each month and see a change. But at the start of records it will be unstable and as you get to the present it will become more and more stable and harder to move the average.