Help with research topic

I have a graph that shows average IMDB movie rating vs. runtime. It shows that movies that are 90 minutes long are generally rated lower than shorter and longer movies.

I have some questions I would like help with:

• Is this relationship helpful for movie producers to use?
• What factors could be influencing this result?
• What sort of actions should be taken for producers to improve how movies are received by audiences?
• What sort of analytical approach should be tried …

datascience research