A publishing company is attempting to develop a model to help predict textbook sales for books it is considering for future publication. The marketing department has collected data on several variables from a random sample of 15 books.

A B C D E F G H 1 Book Volume Sold (10000 bks) Pages Competing Books Ad Budget ($1000) Age of Author Prodn Cost ($1000s) No reviewers 2 1 15 176 5 25 49 38 5 3 2 140 296 10 83 57 86 B 4 3 75 483 7 40 29 59 5 4 100 811 14 29 37 80 9 6 un 26 302 9 52 35 29.5 3 33 411 15 33 43 31 8 59 333 7 19 51 40 9 8 103 602 4 37 62 69 4 10 9 88 504 12 51 33 51 4 10 10 204 3 30 50 34 6 17 11 9 376 4 19 26 20 2 13 12 77 600 41 40 80 Un 14 13 59 400 26 44 60 5 15 14 383 597 8 61 59 87 16 15 16 126 27 38 29 3