4
QuizMultiple Choice

Variation in Predictions and Estimates

Question 4 • Common Core Math 7 - MA3107 CR

Looking at the means of these samples, which value is most likely to be the mean of the population from which the samples were taken? Sample NumberSample Mean111.8212.5315.1414.3513.0612.9

Answer
A
10.2
B
11.5
C
12.9
D
15.4

Explanation

The population mean is best estimated by averaging the sample means. Their average is (11.8 + 12.5 + 15.1 + 14.3 + 13.0 + 12.9) ÷ 6 ≈ 13.27. Of the choices, 12.9 is closest, so the best answer is 12.9.

AI-written and checked against the verified answer.

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