AMC 8 2018 Problem 8
AMC8 2018 年第 8 题
统计与数据图表★★☆☆☆
Mr. Garcia asked the members of his health class how many days last week they exercised for at least 30 minutes. The results are summarized in the following bar graph, where the heights of the bars represent the number of students. What was the mean number of days of exercise last week, rounded to the nearest hundredth, reported by the students in Mr. Garcia's class?
先生调查了他健康课的学生上周有多少天他们运动了至少 30 分钟，结果如下图柱状图所示，其中柱的高度表示学生数。那么 Garcia 先生班里的学生上周平均运动的天数是多少天？结果保留到百分位。
- A.3.50
- B.3.57
- C.4.36
- D.4.50
- E.5.00
正确答案 · Correct Answer
C
解析 · Solution
解析整理中
继续练习