a2.R

#Feature Scaling & Mean Normalization
#This function is EXACTLY equivalent to the scale() function in R

//Remember to exclude the last column of the data, we should not normalize what we predict.
room_n = scale(room[1:5])

//Or all this function
normalize = function(x)
{
  return ((x - mean(x))/sd(x))
}

#Merge the last column after normalizing, which we initially excluded.
room_n = cbind(room_n,room[6])