Homepage-MAT 3: Exemise279-'- x a Meeting Informal x I @ GelHeIp-MATH x I . [ZTJMtivityzo-'I x I Q Rgum x I u Course Hem x I [3 Exercise 27-9:Pr x I + o 6 ) C i pniriestatedesirellearn.comfd2lflejconten'tj'l10226,1'viewConlent562703Niew Q j} *- o 5 Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error: The correlation is -.B, so there is no association between distance and quiz average. C: E A correlation of -.B does not mean no association, rather it means a fairly strong negative correlation. E j. The statement is not in error. E' E The correlation coefficient is a proportion, between 0 and 1, so .3 is not a possible value for r. '_: :. In order to compute a correlation coefficient, both variables must be categorical. (E) In order to compute a correlation coefficient, both variables must be quantitative. '. :I The correlation coefficient cannot be negative, so -.8 is not a possible value for r. f :- Because the correlation is negative, we cannot conclude a cause-and-effect relationship between distance and quiz average. D View Feedback Question 3 0 I 1 point Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error: The correlation between distance and quiz average is -.8, so sitting further from the teacher must cause students to score lower on quizzes. :- A negative correlation would mean that students who sit farther away tend to score higher: Homepage- MAT x 6 ) C i pniriestatedesirellearn.comfd2lflejconten'tj'l10226,1'viewConlent562703Niew Exercise 279 - '- x Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error: The correlation between distance and quiz average is -.8, so sitting further from the teacher must cause students to score lower on quizzes. ' j A negative correlation would mean that students who sit farther away tend to score higher: The statement is not in error. ) Even though .8 is pretty strong correlation, we cannot conclude a cause-andeffect relationship. because the study is not an experiment. The correlation coefficient cannot be negative. so -.8 is not a possible value for r. {E} In order to compute a correlation coefficient, both variables must be quantitative. c: E In order to compute a correlation coefficient, both variables must be categorical. '. j. The correlation coefficient is a proportion, between 0 and 1, so -.8 is not a possible value for r. D View Feedback Question 4 1 I 1 point Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error: The correlation between distance and quiz average is -1.8. T: In order to compute a correlation coefficient. both variables must be categorical. a Meeting Informal x I @ GelHeIp-MATH x I . [ZTJMtivityzo-'I x Q Rguron x I u Course Hem x I [3 Exercise 27-9:Pr x I + aOE Homepage-MAT 3: Exemise279-'- x a Meeting Informal x I GelHeIp-MATH x I . [ZTJMtivityzo-'I x 13 Romeo 3: I u Course Hem x I G Exercise 27-9: Pr x I + o 6 ) C i prairiestatedesirellearn.comlfd2lflejconten'tj'l10226,1'viewConlent562703Niew Q i? u a o E |> View Feedback Question 5 0 I 1 point Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error: The correlation between quiz average and genderis -.8. Because the correlation is negative, we cannot conclude a cause-and-effect relationship between distance and quiz average. 1- In order to compute a correlation coefficient, both variables must be categorical. -. -The correlation coefficient is a proportion, between 0 and 1, so -.8 is not a possible value for r. 1- The correlation coefficient cannot be negative. so :8 is not a possible value for r. -.__7 _- A correlation of -.B would mean no association, so we would not consider it. 1- The statement is not in error. 1- In order to compute a correlation coefficient, both variables must be quantitative. D View Feedback Question 6 0 I 1 point Recall from Exercise 5-23 the idea of studying whether students who sit closer to the teacher tend to have higher quiz scores than students who sit farther away from the teacher. Suppose you measure distance from the teacher (in feet and inches) and the students average quiz score on their 10 quizzes, for a group of students. Explain how you know the following statement is in error
