Great video! Thank you for making these videos. Very helpful!

Thank you Sir for the wonderful explanation. I have a question - what happens if the main effect only by itself is significant. However, upon inclusion of the interaction effects, the main effect suddenly becomes insignificant. In such cases, should we keep all the main effects and interaction effects irrespective or significance. I'm asking because I have often been told that the interaction effect without the main effect does not make sense. So, retain the interaction effects only when both main and interaction effects are significant.