Figure 6

Release year trends.

Note: Linear regression trends of $\overline{r}$ (top panel), H (middle) and S (bottom) as a function of film release year. In the case of H and S only movies with $\mathrm{4<}\overline{r}\mathrm{<7}$ have been considered. Black: all movies (with votes from all demographics), including error bars representing the error of the mean. Red: only US users. Dark blue: only males. Light blue: only age group 18–29. Green: only movies with less than 50,000 votes. Purple: only movies with more than 50,000 votes. Dotted orange: only movies satisfying the quality cut D<1. See Table 1 for the number of movies and the total number of ratings of the various subcategories.