Q6: substantially or slightly?

Module 1. The Predictive Modeling Pipeline Wrap-up quiz
#1

how can we consider an increase or decrease as slightly or substantially ?

#2

Sorry i saw the answer in another question, substantially is score Q6 > score Q5 +3 * std Q5

Is it correct ?

#3

Yes, it is. You can refer to: Question 6 solution feedback - #16 by Marc_In_Singapore