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

The list gives the mass, in grams, of $5$ alpine marmots.

$4,010$ ; $4,010$ ; $3,030$ ; $4,050$ ; $3,050$

What is the mean mass, in grams, of these $5$ alpine marmots?

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Explanation

The correct answer is $3,630$ . 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. The sum of the masses, in grams, of these alpine marmots is $4,010 + 4,010 + 3,030 + 4,050 + 3,050$ , or $18,150$ grams. The number of alpine marmots in the data set is $5$ . Therefore, the mean mass, in grams, of these $5$ alpine marmots is $StartFraction 18,150 Over 5 EndFraction$ , or $3,630$ .