(遵义专版)2019中考数学高分一轮复习第一部分教材同步复习第八章统计与概率课时28数据的收集、整理与描述权威预测.doc

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(遵义专版)2019中考数学高分一轮复习第一部分教材同步复习第八章统计与概率课时28数据的收集、整理与描述权威预测.doc_第1页
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1第一部分 第八章 课时 28某学校为了了解学生的兴趣爱好,随机抽取了一些同学进行调查,将收集的数据整理并绘制成下列两幅统计图,请根据图中的信息,解答下列问题:(1)学校这次调查共抽取了_200_名学生;(2)补全条形统计图;(3)在扇形统计图中, “象棋”所在扇形的圆心角度数为_36_;(4)设该校共有学生 3 000 名,请你估计该校有多少名学生喜欢书法?解:(1)学校这次调查共抽取了 2010%200(名)学生(2)喜欢“绘画”的人数为 20020%40(名),补全条形统计图如图(3)在扇形统计图中, “象棋”所在扇形的圆心角度数为 36010%36.(4)3 00025%750(名)答:估计该校有 750 名学生喜欢书法

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