1. MaxMinScaler

Xscaled = (X - Xmin)/(Xmax - Xmin)
New Range: 0-1

2. BinaryScaler

Xscaled = X <= critical_value ? 0 : 1
New Range: 0/1


3. StandardScaler

Xscaled = (X - Xmean)/ Xstd
New Range: min(Xscaled) to max(Xscaled)
Note: Contains negative values for all the data points less than mean
