How long will that take? Use this calculator to provide better answers to that question for your technical and programming tasks. You should not estimate a task without a good understanding of the specification, acceptance criteria, user story, and wireframes, and remember an estimate is not a commitment.
Uses PERT calculation for most likely estimate. Formula is (Optimistic + (4 x Most Likely) + Pessimistic) / 6
MOST LIKELY
Uses the mean for a 'three point estimate'. Formula is (Optimistic + Most Likely + Pessimistic) / 3
AVERAGE
A low standard deviation means that most of the numbers are close to the average,
while a high standard deviation means that the numbers are more spread out. Formula is (Pessimistic - Optimistic) / 6
Standard Deviation: 1.43
A low variance means that most of the numbers are close to the average,
while a high variance means that the numbers are more spread out. Formula is ((Pessimistic - Optimistic) / 6) ^ 2
Variance: 1.55
Your average estimate (5 days) is more than a full 10 day sprint. Try to break the task down into sub-tasks. Ideally, a feature should take no more than 1 sprint, and a task no more than 3 days.
High Estimate
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68% confidence between
Within one standard deviation from the mean.
1 and 2
days
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95% confidence between
Within two standard deviations from the mean.
1 and 2
days
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