某机械化养鸡场有一批同时开始饲养的良种鸡1000只，任取10只，称得其质量情况列表如下鸡的质量（单位：千克）2.02.22.42.52.63.0鸡的数量（单位：只）123211（1）这10只鸡的平-八

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