How does the accuracy of a sample mean in estimating the population mean change?

Multiple choice question for Psychology Mcqs. Select an option, then review the explanation below.

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When the sample's range becomes largerWhen the sample's standard deviation growsWhen the sample mean risesWhen the sample's standard deviation reduces

Explanation

The precision of the sample mean as an estimate of the population mean improves when the variability within the sample, measured by the standard deviation, decreases. Lower standard deviation indicates that data points are closer to the mean, resulting in a more accurate approximation.

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How does the accuracy of a sample mean in estimating the population mean change?

Explanation

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