摘要
组中值是组距式分组时各组数据的代表值。针对计算开口组组中值传统公式的不足,探讨组中值回归模拟计算法,即将具有上下限的正常组组中值作为因变量、其所在组的上(下)限作为自变量,利用SPSS软件进行多个线性和非线性回归模拟,从中选出适当的模型表达式,用以计算异组距数列开口组的组中值。实验结果表明,该法能较好地调整异组距数列开口组的组中值,让其更符合实际情况。
The mid-value of the group is the representative value of each group of data when the group is divided into groups.In terms of the disadvantages of the traditional formula for calculating mid-value of the opening group,the method of regression simulation of mid-value of the group is discussed.The mid-value of the normal group is regarded as the dependent variable and its maximum(minimum)as the independent variable.Multiple linear and nonlinear regression models are simulated by using SPSS software to select appropriate expressions in calculating the mid-value of the opening group with different group distance series.The experimental results show that this method can better adjust the mid-value of the opening group with different group distance series so that it is more in line with the actual data.
作者
葛亚平
宋佳莹
GE Ya-ping;SONG Jia-ying(Basic Teaching College,Nantong Institute of Technology,Nantong 226002,China)
出处
《南通职业大学学报》
2018年第1期67-69,共3页
Journal of Nantong Vocational University
基金
江苏省教育科学规划课题(B-b/2015/03/041)
南通理工学院教研课题(2017NITJG11)
关键词
组中值
异组距
开口组
SPSS软件
回归模拟
mid-value of the group
different group distance
opening group
the SPSS software
regression simulation
作者简介
葛亚平(1981—),女,江苏南通人,副教授,主要研究方向为大学数学教学与研究。
