A History Professor Gives a Quiz to His Class and Records

question 28

Multiple Choice

A history professor gives a quiz to his class and records the following scores: 13, 11, 11, 9, 12, 13, 16, 14, 11, 10, 8, 13, 20. The variance for this distribution is _________. Assume sample scores.

• A) 162.38
• B) 9.01
• C) 9.76
• D) 9.60

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Definitions:

Point Estimate

A single value estimate that serves as the best guess or most likely value for a population parameter based on sample data.

Population Parameter

A numerical value that characterizes a certain aspect of a population, such as its mean or standard deviation.

Measurement Error

The difference between a measured value and the true value, often arising from limitations in measurement tools or techniques.