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5. The following table list the midterm scores (x) and final exam scores (y) for a random sample of 10 students in Stat 141 X
5. The following table list the midterm scores (x) and final exam scores (y) for a random sample of 10 students in Stat 141 X 60 88 67 91 81 93 78 90 75 48 V 48 74 54 62 75 49 60 84 81 47 The summaries of the data are given by n = 10, > x: = 771, > x7 = 61437, Zy = 634, Y y? = 41992 Xiyi = 49855 (e) Calculate r, the correlation coefficient between y and x. Interpret the number. (4 marks) (f) Calculate the coefficient of determination r2. Interpret the number. (3 marks) (g) Predict the final exam score of a student who scored 60 on the midterm. (2 marks)
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