Movie Dramas. Here's a scatterplot of the production budgets (in millions of dollars) vs. the running time (in minutes) for major release movies in 2005. Dramas are plotted in red and all other genres are plotted in black. A separate least squares regression line has been fitted to each group. For the following questions, just examine the plot:

a) What are the units for the slopes of these lines?

b) In what way are dramas and other movies similar with respect to this relationship?

c) In what way are dramas different from other genres of movies with respect to this relationship?
data we examined in Exercise 7. Movies with an R rating are colored purple, those with a PG-13 rating are red, and those with a PG rating are green. Regression lines have been found for each group. (The black points are G-rated, but there were too few to fit a line reliably.)

a) In what ways is the relationship between run times and budgets similar for the three different ratings groups?

b) How do the costs of R-rated movies differ from those of PG-13 and PG rated movies? Discuss both the slopes and the intercepts.

c) The film King Kong, with a run time of 187 minutes, is the red point sitting at the lower right. If it were omitted from this analysis, how might that change your conclusions about PG-13 movies?