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Mean, Standard Deviation

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1.What does it mean for a sample to have a standard deviation of zero? Describe the scores in such a sample.

2. A population has mean, M =100 and standard deviation, s = 20. If you select a single score from this population, on the average, how close would it be to the population mean? Explain answer.

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Solution Summary

Answers two questions: 1) What does it mean for a sample to have a standard deviation of zero? 2) How close is a single score, on an average, to the population mean.

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1. What does it mean for a sample to have a standard deviation of zero? Describe the scores in such a sample.

If the standard deviation is zero, it means that all the values in the sample are equal. The scores in such a sample are all equal such as 47, 47, 47, 47, 47, - - - - - -, 47.

2. A population has M =100 and s = 20. If you select a single score from ...

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