R语言笔记 多维列联表 | 您所在的位置:网站首页 › r语言 列联表 › R语言笔记 多维列联表 |
table()和xtabs()都可以基于三个或更多的类别型变量生成多维列联表。margin.table()、 prop.table()和addmargins()函数可以自然地推广到高于二维的情况。另外,ftable()函 数可以以一种紧凑而吸引人的方式输出多维列联表 > mytable ftable(mytable) Improved None Some Marked Treatment Sex Placebo Female 19 7 6 Male 10 0 1 Treated Female 6 5 16 Male 7 2 5 汇总数量 > margin.table(mytable) [1] 84 > margin.table(mytable,1) Treatment Placebo Treated 43 41 > margin.table(mytable,2) Sex Female Male 59 25 > margin.table(mytable,3) Improved None Some Marked 42 14 28 > margin.table(mytable,c(1,3)) Improved Treatment None Some Marked Placebo 29 7 7 Treated 13 7 21 --- > prop.table(mytable) > ftable(addmargins(prop.table(mytable,c(1,2)),3)) Improved None Some Marked Sum Treatment Sex Placebo Female 0.59375000 0.21875000 0.18750000 1.00000000 Male 0.90909091 0.00000000 0.09090909 1.00000000 Treated Female 0.22222222 0.18518519 0.59259259 1.00000000 Male 0.50000000 0.14285714 0.35714286 1.00000000 |
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