Question

英语翻译“可以从该直方图中看出,在10~19这条线上共有4个方框,而20~29这条线上共有5个方框,30~39上面只有1

Answer 1

According to this histogram,there are four squares on the line 10~19,five squares on the line 20~29,and only one square on the line 30~39.Each square has the equal area,so the frequency ratio of this three groups is 4:5:1.

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