CompTIA Data+ (DA0-001) — Question 277

A data analyst has a set of data that shows the number of gallons of oil produced each day. The company would like to know the standard deviation for the data set. The variance for the data is 36 gallons. Which of the following is the standard deviation for gallons produced?

Answer options

• A. 1.16
• B. 6
• C. 36
• D. 72

Correct answer: B

Explanation

The standard deviation is the square root of the variance. Since the variance is 36 gallons, the standard deviation is the square root of 36, which is 6 gallons. The other options are incorrect because they do not represent the square root of the variance value.