Which value is not used to calculate the estimated duration using three-point estimating techniques?

A. Most likely estimate
B. Standard estimate
C. Optimistic estimate
D. Pessimistic estimate

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HINT: Look for the estimate that is not mentioned in the A Guide to the Project Management Body of Knowledge (PMBOK^® Guide)

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Answer and Explanation:
The correct answer is B.

Most likely, optimistic, and pessimistic estimates are the three types of estimates used to define an approximate value and range for an activity's duration using three-point estimating techniques.

Details for each option:

A. Most likely estimate
Incorrect. The most likely estimate is one of the three values.

B. Standard estimate
Correct. 'Standard estimate' is not a PMBOK® Guide term.

C. Optimistic estimate
Incorrect. The optimistic estimate is one of the three values.

D. Pessimistic estimate
Incorrect. The pessimistic estimate is one of the three values.

Reference: A Guide to the Project Management Body of Knowledge, (PMBOK^® Guide) – Sixth Edition, Project Management Institute Inc., 2017, Page(s) 201