I collected survey responses (about 30 questions, scaled 1-5). The data is heavily left skewed. I am trying to normalize data (ie get my responses with mean = 0 and sd = 1). I've been searching online but cannot seem to find an R code to normalize particular columns. I found a function that normalizes the entire data set, but I only want to normalize particular columns.
I'm sure some of you gurus can help =D
*Disclaimer, this is my first post, sorry if I am not in the right spot.