The scores on a math quiz were 78, 85, 92, 78, and 87. What is the mean (average) score?
✓ Correct Answer: Option B
To find the mean, sum all the scores: 78 + 85 + 92 + 78 + 87 = 420. Then, divide the sum by the number of scores (5): 420 ÷ 5 = 84.
To find the mean, sum all the scores: 78 + 85 + 92 + 78 + 87 = 420. Then, divide the sum by the number of scores (5): 420 ÷ 5 = 84.