-阿雷边学边教R语言第8期—分组数据处理

热门回复：

• LoX:奉上df1代码 age<-c(18,18,28,28,28,38,38,38,38) sex<-c("F","M","M","M","F","F","M","F","M") income<-c(2000,3000,4200,5000,5300,5700,6000,7000,9000) education<-c("高中","高中","大学","大学","大学","硕士","硕士","大学","大学") df1<-(data.frame(age,sex,education,income)) df1
• function合法吗:可以在excel里把数据写好再输入 ……………………………………… setwd("C:/Users/ME/Desktop/R") df1<-read.csv("本次要用数据.csv") attach(df1) tapply(income,sex,sum) tapply(income,list(sex,education),sum) by(income,sex,sum) by(income,list(sex,education),sum) aggregate(income~sex+education,,sum) detach(df1)
• 哔哩小魔虾:R语言学习，day1
• 若赤之:up是我看的里面讲R语言最清楚的了。可以再讲一下多元线性回归模型吗？[大哭]
• 刘友杰:为什么用同样的数据，这里list处理后还是报错，显示参数长度不一致呢