Each value in the data set shown represents the height, in centimeters, of a plant. 6, 10, 13, 2, 15, 22, 10, 4, 4, 4 What is the mean height, in centimeters, of these plants?
Correct answer: 9 (parsed from the explanation — this source omits an answer key for this item)
Explanation
The correct answer is 9. The mean of a data set is the sum of the values in the data set divided by the number of values in the data set. It follows that the mean height, in centimeters, of these plants is the sum of the heights, in centimeters, of 6+10+13+2+15+22+10+4+4+4 90 each plant, , or , divided by the 10 number of plants in the data set, . Therefore, the mean height, in centimeters, of 90 these plants is 10, or 9.
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