1. Indicate what the scatter diagram and probable regression line would look like for two variables that are correlated in each of the following ways (in each instance, assume a negative intercept):

(a) -0.89,

(b) +0.48, and

(c) -0.10.

2. Circle K runs a contest, inviting customers to fill out a registration card. In exchange, they are eligible for a grand prize drawing of a trip to Alaska. The card asks for the customer's age, education, gender, estimated weekly purchases (in dollars) at that Circle K, and approximate distance the Circle K is from his or her home. Identify each of the following if a multiple regression analysis were to be performed: (a) independent variable, (b) dependent variable, (c) dummy variable.