Determine the mean, median, mode, and midrange for this collection of class test scores:88 82 97 76 79 92 65 84 7990 75 82 78 77 93 88 95 7369 89 93 78 60 95 88 72 8094 88 74

Treating the run-together scores as 79, 90; 73, 69; and 80, 94, there are 30 scores with a total of 2,473. The mean is 2,473 ÷ 30 ≈ 82.4, and the 15th and 16th scores in order are both 82, so the median is 82. The score 88 appears most often, making it the mode; the midrange is (60 + 97) ÷ 2 = 78.5. These results match choice D.

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