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Chapter 5 · Project ManagementPractice
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CONCEPT PRACTICE

Three-point duration estimation

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Volume 2 · Chapter 5 · Textbook Exercises · Q4

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In a project, an activity that an experienced employee can complete in one day, can be completed in two days by a general employee. When a new employee who is not yet familiar with the work performs the same activity, it takes six days to be completed. Which of the following is a technique to estimate the period that is required for the activity as three days by the expression that is described below? Estimate of the duration that is required for the activity = (1 + 2 + 6) ÷ 3 = 3 days

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Source: FE Vol 2.pdf, PDF page 346, textbook p. 340 · Information-technology Promotion Agency, Japan · First Edition: April, 2015. ID: tb-v2-c5-q4. Publisher answer and commentary · private review.

Original question · Q4
In a project, an activity that an experienced employee can complete in one day, can be 
completed in two days by a general employee. When a new employee who is not yet familiar 
with the work performs the same activity, it takes six days to be completed. Which of the 
following is a technique to estimate the period that is required for the activity as three days by 
the expression that is described below? 
Estimate of the duration that is required for the activity = (1 + 2 + 6) ÷ 3 = 3 days
a) Parametric estimate
b) Three-point estimate
c) Reserve analysis
d) Analogous estimate

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