| | \n\n \n \n \n int axis=1 | \tnormalize so axes groups up to this dimension have mean 0, std deviation 1 \n | \n \n\n \n \n \n string type= | \t\'m\' means data are biased and scaled to be between 0 and 1 \n \'s\' means data are biased and scaled to have mean=0, std dev = 1 \n \n | \n \n |