Case Study: Are Action or Romance Movies Rated Higher?

Let’s apply our knowledge of hypothesis testing to answer the question, “Are action or romance movies rated higher on IMDb?” IMDb is a database on the internet providing information on movie and television show casts, plot summaries, trivia, and ratings. We’ll investigate if, on average, action or romance movies get higher ratings on IMDb.

IMDb ratings data

The movies dataset in the ggplot2movies package contains information on 58,788 movies that have been rated by users of IMDb.