A Researcher Records a Sample of 30 Exam Scores and Finds

question 58

Multiple Choice

A researcher records a sample of 30 exam scores and finds that the population mean for these data is larger than the sample variance.Is this possible?

• A)yes,the population variance is usually larger than the sample variance
• B)no,the population variance will only be larger when at least 50 scores are recorded
• C)no,the sample variance will be larger because SS is divided by degrees of freedom in the denominator of the variance formula
• D)not possible to know because the scores are not given

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Definitions:

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