Multiple Choice
An instructor wanted to know if the scores on pop quizzes are good predictors of the scores on the final exam. He used the following regression model,
Yi = b1X1i + b2X2i + b3X3i + a + ei, where Y is the score on the final exam, X1 is the score on the first quiz, X2 is the score on the second quiz, and X3 is the average score of the two quizzes. Evaluate this model.
A) The assumption of independence is violated.
B) The assumption of linearity is violated.
C) The assumption of noncollinearity is violated.
D) There is no indication of assumption violation based on the information given.
Correct Answer:

Verified
Correct Answer:
Verified
Q7: You are given the following data,
Q8: In a multiple regression model, Y is
Q9: David is studying the correlation of temperature
Q10: Karen wants to use a categorical variable,
Q11: Carol is studying the correlation of college
Q13: Suppose for the three variables, GPA (X<sub>1</sub>),
Q14: An interaction between X<sub>1</sub> and X<sub>2</sub> is
Q15: The scatterplot of X and Y are
Q16: Which of the following statements about R<sup>2</sup>
Q17: For the regression model, Y<sub>i</sub> = b<sub>1</sub>X<sub>1</sub><sub>i</sub>