Question 19 (4 Marks) The values of Sx and Sy, respectively, are: A. 329 and 374 B. 329 and 347 C. 392 and 374 D. 339 and 374 Question 20 The values of Q and S, respectively, are: (4 Marks) A. 7056 and 1861 B. 7065 and 1681 C. 7056 and 1681 D. 7560 and 1618 Question 21 (4 Marks) The linear regression equation is: A. y=21.07+0.817x B. y=21.07+0.817x C. y=21.070817x D. y=0.817+21.07x Question 22 (4 Marks) The Pearson's correlation is closest to: A. 0979 B 0.945 C. 0.963 D. -0.979 Question 23 (4 Marks) Another student scores 63% in Accounting. The students Mathematics mark will be approximately: A. 55% B. 53% C. 51% D. 1002