(1)立定跳远距离的极差.·································· 1分 立定跳远距离的中位数.·············································· 2分 根据计分标准,这10名女生的跳远距离得分分值分别是:7,9,10,10,10,8,10,10,9. 所以立定跳远得分的众数是10(分),···························································· 3分 立定跳远得分的平均数是9.3(分).······························································ 4分 (2)因为10名女生中有6名得满分,所以估计200名女生中得满分的人数是(人). |