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前面三讲主要讨论了数量性状资料的统计分析方法,而在农业科学研究中,还有许多质量性状资料属次数资料,间断性变数的计数资料也可整理为次数资料。本讲将介绍卡平方测验用于次数资料的分析方法。农业科学试验中无论是质量性状还是数量性状都可用次数表示,凡试验结果用出现次数表示的资料叫次数资料。对次数资料的检验,可以用百分数进行分析,也可直接用观测得到的数据进行X~2检验。卡平方测验是判定计数资料某种假设的理论出现次数与实际出现次数的差异,是偶然的现象还是必然的结果。
The previous three lectures mainly discussed the statistical analysis of quantitative trait data. In the agricultural science research, there are many data of quality traits, and the counting data of intermittent variables can also be sorted into the number of data. This talk will introduce the card squared test method for the analysis of the number of times. Agricultural science experiments, whether qualitative or quantitative traits can be used that the number of times, where the results of the test with the number of times that the number of times the data said. The test of the number of data, you can use the percentage analysis, can also be directly observed data obtained X ~ 2 test. Card squared test is to determine the count data of a hypothesis that the number of theoretical appearance and the actual number of times the difference is an accidental phenomenon or an inevitable result.