Five observations taken for two variables follow. X 6 7 10 4 13 X 50 50 40 60 30 (a) Choose the correct scatter diagram with x on the horizontal axis. (1) (ii) 60 50+ 40 30- 10 15 (iii) 20- 104 > J (iv) 60 50 40- 30 20 10+ 10 15 (iii) 60 50 40+ 30- 20+ 10+ (iv) > 9 50 40 30- 20 10+ 5 10 15 10 15 Graph (i) What does the scatter diagram indicate about the relationship between the two variables? Negative linear (b) Compute the sample covariance. If needed, round your answer to one decimal digit. If your answer is negative use "minus sign". -40 Interpret the sample covariance. There is Select your answer. relationship between the two variables. Based on the sample covariance, Graph (i) What does the scatter diagram indicate about the relationship between the two variables? Negative linear (b) Compute the sample covariance. If needed, round your answer to one decimal digit. If your answer is negative use "minus sign". -40 Interpret the sample covariance. There is - Select your answer-relationship between the two variables. Based on the sample covariance, - Select your answer (c) Compute the sample correlation coefficient. If needed, round your answer to three decimal digits. If your answer is negative use "minus sign". -0.992 Interpret the sample correlation coefficient. There is a strong positive linear relationship between the two variables. The sample correlation coefficient Select your answer determine the strength of the relationship