Function Transformer is part of feature engineering it converts probability density function to normal distribution
credits:https://www.youtube.com/watch?v=cTjj3LE8E90&list=PLKnIA16_Rmvbr7zKYQuBfsVkjoLcJgxHH&index=30
In statistics, a Q–Q plot is a probability plot, which is a graphical method for comparing two probability distributions by plotting their quantiles against each other.
data is normal
