X 9:27 Marks obtained by 12 students in the college test (x) and the university test (y) are as follows: 41 45 50 68 47 77 90 100 80 100 40 43 y 60 63 60 48 85 56 53 91 74 98 65 43 What is your estimate of the marks a student could have obtained in the university test if he obtained 6 in the college test but was ill at the time of the university test