Mariela earned the following test scores in math:95, 90, 100, 85, 80Mr. Adams accidentally entered Mariela’s next test score as 0. Which of these statements are true? Check all that apply.

Before the error, the scores in order were 80, 85, 90, 95, and 100. Their mean is 90, and the middle score—the median—is also 90, so A is true. Adding 0 creates an outlier; the new mean is 450 ÷ 6 = 75, and the new median is (85 + 90) ÷ 2 = 87.5, so C and E are true. The mean changed by 15 points, while the median changed by only 2.5 points, so F is true; the median did not remain the same.

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