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A sprint started with 354 requirements. As the sprint progressed, 14 requirements were introduced, 6 requirements were removed, and 28 requirements were changed. What was the requirements volatility for this sprint?
Requirements volatility is calculated as the percentage of change in the total number of requirements during a sprint. The formula to calculate volatility is:
Volatility=(Introduced+Removed+Changed)Initial100text{Volatility} = frac{(text{Introduced} + text{Removed} + text{Changed})}{text{Initial}} times 100Volatility=Initial(Introduced+Removed+Changed)100
Using the given data:
Initial requirements = 354
Introduced = 14
Removed = 6
Changed = 28
Volatility=(14+6+28)35410013.5%text{Volatility} = frac{(14 + 6 + 28)}{354} times 100 approx 13.5%Volatility=354(14+6+28)10013.5%
'Agile Estimating and Planning' by Mike Cohn, which explains the concept of requirements volatility in agile projects.