Question

Point out the wrong statement.

(a) Training and testing data must be processed in different way

(b) Test transformation would mostly be imperfect

(c) The first goal is statistical and second is data compression in PCA

(d) All of the mentioned

I have been asked this question during a job interview.

This intriguing question originated from Predicting with Regression topic in section Machine Learning of Data Science

Answer 1

Right option is (a) Training and testing data must be processed in different way

The explanation: Training and testing data must be processed in same way.