计算题:计算下列数据极差。 16、25、13、7、9
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计算题:计算下列数据平均值。6、5、3、7、9
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2、计算题:请计算数据组“10,7,10,8,10,10,7,6”的均值、中位数
计算题:请计算数据组“10,7,10,8,10,10,7,6”的均值、中位数、众数、标准差和极差。
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听第9段材料,回答第13至16题。A13.Who could the man speaker most probably be?BA. A person who saw the accident.CB. The driver of the lorry.DC. A police office.
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听第9段材料,回答第13至16题。A13. Who could the man speaker most probably be?BA. A person who saw the accident.CB. The driver of the lorry.DC. A police officer.
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听第9段材料,回答第13-16题。A第13题:BWho Could the man Speaker most probably be ?CA. a person who saw the accidentDB. the driver of the lorryEC. a police officer
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6、计算题:焦化富气来原料焦化干气,其组成分析如下(体%):氢气:13.9%氮气
计算题:焦化富气来原料焦化干气,其组成分析如下(体%):氢气:13.9%氮气:5.9%甲烷:52.4%乙烷:19.0%丙烷:3.2%丙烯:2.5%正丁烷:1.4%正丁烯:0.5%氧气:1.2%试求(1)焦化...