ACMS 30600 Final Exam Questions & Answers 2024/2025

ACMS 30600 Final Exam Questions & Answers 2024/2025 A correlation of 0 means that there is A. No relationship between the response and explanatory variables. B. No linear relationship between the response and explanatory variables. C. No quadratic relationship between the response and explanatory variables. D. No information to tell if there is a relationship between the response and explanatory variables. - ANSWERSB. No linear relationship between the response and explanatory variables. Which of the following do we look for when describing the relationship between two quantitative variables? A. The direction of the relationship. B. The strength of the relationship. C. The pattern of the relationship (whether it is linear or not). D. All of the above. - ANSWERSD. All of the above (direction, strength, pattern) Which of the following are true about the p-value? A. This is the probability that the null hypothesis is true. B. The p-value of a 1-sided test is double that of the corresponding 2-sided test. C. The p-value is a statement about the data we collected assuming the null hypothesis is true. D. A and C but not B. - ANSWERSC. The p-value is a statement about the data we collected assuming the null hypothesis is true. Which of the following quantities is minimized when we find the least squares regression line? A. sum(abs(y_i - (Bhat_0 + Bhat_1*x_i))) B. sum(y_i - (Bhat_0 + Bhat_1*x_i)^2 - ybar) C. sum(y_i - (Bhat_0 + Bhat_1*x_i))