To find the standard deviation, multiply the standard error by the square root of the sample size.
Standard deviation = standard error × √sample size
Standard deviation ≈ 0.595 × √80
Standard deviation ≈ 0.595 × 8.94
Standard deviation ≈ 5.63
The standard deviation is approximately 5.63.
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Helen gathered data on the fuel efficiency of compact sedans. Her sample contains 80 data points, and the standard error of the mean is approximately 0.595.
What is the standard deviation? Round your answer to the nearest hundredth.
The standard deviation is approximately ___.
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