I have done a Yeo Johnson transformation by using preprocess from caret package. I have predicted the Target Variable using linear regression. Now I want to reverse the transformation for both the Target and the predicted values. I know this question has been answered before but I still couldn't solve my problem. This question was answered here-: https://stackoverflow.com/questions/44973207/revert-transformation-preprocess-caret and here-: https://rdrr.io/github/jknowles/ModelEWS/src/R/exportPrep.R I couldn't modify it for Yeo Johnson.