作业帮统计学求平均数的题目现在有75个数字,每五个数字分一组,分成15组,要使这15组的和基本相等或者相差很小!33.48,33.19,33.51,33.60,33.44,33.21,33.54,33.54,33.03,33.75,33.55,33.03,33.29,33.54,33.67,33.37,33.27,33.55,33.
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统计学求平均数的题目现在有75个数字,每五个数字分一组,分成15组,要使这15组的和基本相等或者相差很小!33.48,33.19,33.51,33.60,33.44,33.21,33.54,33.54,33.03,33.75,33.55,33.03,33.29,33.54,33.67,33.37,33.27,33.55,33.
统计学求平均数的题目
现在有75个数字,每五个数字分一组,分成15组,要使这15组的和基本相等或者相差很小!
33.48,33.19,33.51,33.60,33.44,33.21,33.54,33.54,33.03,33.75,33.55,33.03,33.29,33.54,33.67,33.37,33.27,33.55,33.65,33.17,33.10,33.53,33.85,33.57,33.23,33.56,33.56,33.10,33.40,33.02,33.65,33.63,33.34,33.34,33.70,33.61,33.59,33.60,33.64,33.20,33.41,33.63,33.57,33.31,33.85,33.42,33.55,33.16,33.33,33.32,33.56,33.68,33.59,33.64,33.47,33.54,33.69,33.61,33.45,33.02,33.50,33.48,33.72,32.98,33.48,33.75,33.68,33.63,33.44,33.60,33.66,33.55,33.35,33.69,33.33
哪位高人给个方法，万分感谢！！
统计学求平均数的题目现在有75个数字,每五个数字分一组,分成15组,要使这15组的和基本相等或者相差很小!33.48,33.19,33.51,33.60,33.44,33.21,33.54,33.54,33.03,33.75,33.55,33.03,33.29,33.54,33.67,33.37,33.27,33.55,33.
全体排序.
第一次从排头取2个,排尾取3个组成一组
第二次从剩下的排列中,排头取3个,排尾取2个
就这么交错着取,直到取完.
1.计算期望。
2.计算平均离差。
3.把样本按照离差排序。
4.从最大离差的样本开始配凑，大离差样本优先、离差和接近平均值者优先。
5.最后调整。
全体排序。 第一次从排头取2个，排尾取3个组成一组 第二次从剩下的排列中，排头取3个，排尾取2个 就这么交错着取，直到取完。 1.计算期望。 2.计算平均离差。 3.把样本按照离差排序。 4.从最大离差的样本开始配凑，大离差样本优先、离差和接近平均值者优先。 5.最后调整。