What is the mean of the data set {4, 7, 7, 2, 9}?

Prepare for the PHFO Quantitative Analysis For Business Exam. Study with flashcards, multiple choice questions, hints, and explanations to ensure confidence and success in your exam!

Multiple Choice

What is the mean of the data set {4, 7, 7, 2, 9}?

Explanation:
Mean is the arithmetic average, found by adding all values and dividing by how many data points there are. For this set, 4 + 7 + 7 + 2 + 9 = 29. There are 5 numbers, so the mean is 29 ÷ 5 = 5.8. That value is the actual average of the data, matching the option that lists 5.8. The other numbers would require a total of 25, 31, or 27.5, which doesn’t equal the sum of these values. The mean reflects every data point, balancing the highs and lows to a central value.

Mean is the arithmetic average, found by adding all values and dividing by how many data points there are. For this set, 4 + 7 + 7 + 2 + 9 = 29. There are 5 numbers, so the mean is 29 ÷ 5 = 5.8. That value is the actual average of the data, matching the option that lists 5.8. The other numbers would require a total of 25, 31, or 27.5, which doesn’t equal the sum of these values. The mean reflects every data point, balancing the highs and lows to a central value.

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