14. Go to the Companion website for this book, download the Dell data file, and answer the following questions. Recode the demographics as follows:

a. Combine the two lowest education (q11) categories into a single category. Thus, some high school or less and high school graduate will be combined into a single category labeled “High school graduate or less.”

b. Recode age (q12) into four new categories: 18 to 29, 30 to 39, 40 to 49, and 50 or older.

c. Combine the two lowest income (q13) categories into a single category labeled “Under $30,000.”