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QuestionStatistics
Which answer best describes a standard deviation?
Read all answers and then choose the answer that is most complete and accurate.
The standard deviation is the square root of the corresponding variance.
The standard deviation is the average amount that scores in a distribution deviate from the mean of that distribution.
The standard deviation is a measure of variability.
All of the answers above correctly describe the standard deviation.
None of the answers above correctly describe the standard deviation.
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Answer
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Step 1:: Identify the correct description of standard deviation.
The standard deviation is a measure of variability and it is the square root of the corresponding variance. Moreover, the standard deviation represents the average amount that scores in a distribution deviate from the mean of that distribution.
Step 2:: Evaluate the given options.
Option A: The standard deviation is the square root of the corresponding variance. (Correct) Option B: The standard deviation is the average amount that scores in a distribution deviate from the mean of that distribution. (Correct) Option C: The standard deviation is a measure of variability. (Correct)
Step 3:: Select the best answer.
Option D: All of the answers above correctly describe the standard deviation. (Correct)
Final Answer
All of the answers above correctly describe the standard deviation.
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