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The median is the average of 85 and 87, that is 86.The median is the average of 85 and 87, that is 86.The median is the average of 85 and 87, that is 86.The median is the average of 85 and 87, that is 86.
84.75 is the mean of 88, 91, 74 and 86.
The score is 74%. The grade letter will depend on the grade boundary.
You have what's known as a weighted average. The 80 score is weighted more heavily than the 91 score, so the weighted average will be closer to 80 than a non-weighted average. 0.85 x 80 = 68 0.15 x 91 = 13.65 68 + 13.65 = 81.65
average = the sum of the test scores/the number of the tests93.3 = (97 + 91 + the third test score)/3 (multiply by 3 to both sides)279.9 = 97 + 91 + the third test score (subtract 97 and 91 to both sides)91.9 = the third test score