Please answer both questions. For 7 answer T/. For 8 select the correct multiple choice

.com/courses/1503409/quizzes/1574199/take D Question 7 3 pts Below are statements regarding indicator variables. Specify whether each of the statements is true or false. 1. Indicator variables are needed to quantify a [ Choose ] categorical variable. 2. A categorical variable with d categories [ Choose ] requires d - 1 indicator variables. 3. Indicator variables assume only the [ Choose] intercept is different and the slopes of all False other explanatory variables are constant True across all categories. D Question 8 2 pts If the spread of residuals increases as the response increases, which of the following is the most common approach to correct this type of pattern? Consider a non-linear function of one or more explanatory variables. Add a new explanatory variable. O Transform the response variable. Increase the sample size