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Problem-Solving and Data Analysis / One-variable data: Distributions and measures of center and spread Difficulty: Easy

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?

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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 each plant, $6 + 10 + 13 + 2 + 15 + 22 + 10 + 4 + 4 + 4$ , or $90$ , divided by the number of plants in the data set, $10$ . Therefore, the mean height, in centimeters, of these plants is $StartFraction 90 Over 10 EndFraction$ , or $9$ .