An Activity Has an Optimistic Time of 16, a Most

question 38

Multiple Choice

An activity has an optimistic time of 16, a most likely time of 25, and a pessimistic time of 40. What is the variance for the activity?

• A) 15 − 20
• B) 20.01 − 25
• C) 25.01 − 30
• D) 30.01 − 35
• E) Over 35

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values; how spread out numbers are around the mean.

Median

The middle value of a data set, which divides the set into two equal halves when arranged in ascending or descending order.

Pth Percentile

A value on a rank-ordered dataset below which a certain percentage (P) of observations fall.

Observations

Data collected during an experiment or research, representing the values or attributes of variables of interest.