If a Data Set Has a Mean of 25 and a Variance

question 26

Multiple Choice

If a data set has a mean of 25 and a variance of 16, what is the coefficient of variation?

• A) 16%
• B) 64%
• C) 80%
• D) 156%

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Definitions:

Population Variance

A measure of the spread or dispersion within a dataset, representing the average of squared deviations from the mean.

Level of Significance

The likelihood of incorrectly dismissing the null hypothesis in a statistical analysis, frequently represented by the symbol alpha.

Population Variance

A measure quantifying the degree to which individual points in a whole population differ from the population mean.

Hypotheses

Proposed explanations made on the basis of limited evidence as starting points for further investigation.