> mydata<-read.csv(file.choose())
> y<-data$y
Error in data$y : object of type 'closure' is not subsettable
> x1<-data$x1
Error in data$x1 : object of type 'closure' is not subsettable
> x2<-data$x2
Error in data$x2 : object of type 'closure' is not subsettable
> x3<-data$x3
Error in data$x3 : object of type 'closure' is not subsettable
> x4<-data$x4
Error in data$x4 : object of type 'closure' is not subsettable
> x5<-data$x5
Error in data$x5 : object of type 'closure' is not subsettable
> fit1<-lm(y~x1+x2+x3+x4+x5)
Error in eval(expr, envir, enclos) : object 'y' not found
是什么意思呀？在我导入数据以后再用y的时就说错误 求教大神