AMC 8 1993 Problem 11

AMC8 1993 年第 11 题

统计与数据图表★★★☆☆
Consider this histogram of the scores for 81 students taking a test:
The median is in the interval labeled
考虑 81 名学生考试成绩的直方图:
中位数位于哪个标记的区间内?
AMC 8 1993 Problem 11 figure
  1. A.60
  2. B.65
  3. C.70
  4. D.75
  5. E.80

正确答案 · Correct Answer

C

解析 · Solution

Solution 1

Since 81 students took the test, the median is the score of the 41st41^{st} student. The five rightmost intervals include 2+3+6+12+16=39 students, so the 41st41^{st} one must lie in the next interval, which is (C)70\text{(C)70}.

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