QUESTION 6 The multiple regression model includes several dependent variables. A True A False QUESTION 7 In regression, a binary variable is also called an indicator variable. -A True A False Q U E ST I O N 8 A variable should be added to the model regardless of the impact (increase or decrease) on the adjusted r2 value. A True A False QUESTION 9 Which of the following statements is true regarding a scatter diagram? A' A" It provides very little information about the relationship between the regression variables. A' B' It is a plot of the independent and dependent variables. A' C' It is a line chart of the independent and dependent variables. A' D' It has a value between -1 and +1