2.50 Movie companies need to predict the gross receipts of individual movies once a movie has debuted. The following results, stored in PotterMovies, are the first weekend gross, the U.S. gross, and the worldwide gross (in $millions) of the eight Harry Potter movies:

Title First Weekend ($millions) U.S. Gross ($millions) Worldwide Gross ($millions)

Sorcerers Stone 90.295 317.558 976.458

Chamber of Secrets 88.357 261.988 878.988

Prisoner of Azkaban 93.687 249.539 795.539

Goblet of Fire 102.335 290.013 896.013

Order of the Phoenix 77.108 292.005 938.469

Half-Blood Prince 77.836 301.460 934.601

Deathly Hallows Part I 125.017 295.001 955.417

Deathly Hallows Part II 169.189 381.011 1,328.111

a. Construct a scatter plot with first weekend gross on the X axis and U.S. gross on the Y axis.

b. Construct a scatter plot with first weekend gross on the X axis and worldwide gross on the Y axis.

c. What can you say about the relationship between first weekend gross and U.S. gross and first weekend gross and worldwide gross?