Star Wars movies title lengths by year:
The long period of consensus on proper Star Wars movie title length has ended with a sharp decline.
Neither Caravan of Courage: An Ewok Adventure nor Ewoks: The Battle for Endor were included in the first graph as they were TV movies. However, including them implies the recent decline is a natural correction to mid-1980’s excesses.
Most importantly (save the strongest results till last) including all the movies and comparing title length to running time produces this important result:
That’s an R-squared that’s not to be sneezed at!* 40% of the variance is explained by title length. According to the Felapton Towers research scientists the mathematical model is:
running time = 151.42 – 1.2979×title length
This is excellent news for when they produce the film entitled “R2”, chronicle his life and career as a Sith Lord. the model predicts a running time of 148.8242 minutes, which is shorter than The Last Jedi (a bit of an outlier). Whereas The Life, Loves and Wacky Adventures of Galactic Senator Jar-Jar Binks and All His Fun Friends will mercifully be only half an hour long.
*[Moral: be careful looking at correlations]