Appendix C: Software Estimation Tips

Chapter 1

Tip #1 

Distinguish between estimates, targets, and commitments.

Tip #2 

When you're asked to provide an estimate, determine whether you're supposed to be estimating or figuring out how to hit a target.

Tip #3 

When you see a single-point "estimate," ask whether the number is an estimate or whether it's really a target.

Tip #4 

When you see a single-point estimate, that number's probability is not 100%. Ask what the probability of that number is.