1. Four different beverages are sold at a fast-food restaurant: soft drinks, tea, coffee, and bottled water. a. Explain why the type of beverage sold is an example of a categorical variable. b. Explain why the type of beverage is a nominal-scaled variable.

2. For each of the following variables, determine whether the variable is categorical or numerical and determine its measurement scale. If the variable is numerical, determine whether the variable is discrete or continuous. a. Name of Internet service provider b. Time, in hours, spent surfing the Internet per week c. Whether the individual uses a mobile phone to stream video d. Number of online purchases made in a month e. Where the individual accesses social networks to find sought-after information

3. For a population containing N = 902 individuals, what code number would you assign for a. the first person on the list? b. the fortieth person on the list? c. the last person on the list?

4. What is the difference between a categorical variable and a numerical variable?