Dear Sir , i have uploaded the children naruto by using the children<- read.csv(file.choose( )) , now as a tried to do the histogram by typing the function hist(children), i am getting error as Error in hist.default(children) : 'x' must be numeric. as per the study material below mentioned function is used str(Children) c <-Children$V1 str(c) hist(c, breaks=c(-0.5:7.5),ylim=c(0,30),xlim=c(0,10),xlab="number of children", main="Children in 80 families") but i am getting error as Error in hist.default(c, breaks = c(-0.5:7.5), ylim = c(0, 30), xlim = c(0, : 'x' must be numeric please guide , as how should i resolve it .