The mean of a data set is 10 and the variance is 4. What is the standard deviati

The mean of a data set is 10 and the variance is 4. What is the standard deviation? (2019)

The mean of a data set is 10 and the variance is 4. What is the standard deviation? (2019)

Step 1: Understand that variance is a measure of how spread out the numbers in a data set are.
Step 2: Know that the standard deviation is a value that tells us how much the numbers in the data set typically differ from the mean.
Step 3: Remember that the standard deviation is calculated by taking the square root of the variance.
Step 4: Since the variance given in the question is 4, we need to find the square root of 4.
Step 5: Calculate the square root of 4, which is 2.
Step 6: Conclude that the standard deviation is 2.

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