Issue with NA values in R

Question

I feel this should be something easy, I have looked x the internet, but I keep getting error messages. I have done plenty of analytics in the past but am new to R and programmin

Answer 1

You should be using that parameter in the mean function call:

columnmean <-function(y){
  nc <- ncol(y)
  means <- numeric(nc)
  for(i in 1:nc) {
    means[i] <- mean(y[,i], na.rm = TRUE)
  }
    means 
}

columnmean is a custom function and does not have that parameter.