(b) The table below shows the number of absences, x, in a Statistics course and the final exam grade, y, for 8 students. [2] 3 3 7 6 55 4 70 y 95 90 90 80 85 54 Necessary calculations: You may need to find the following quantities to answer the following questions: E x; =?, E x? =?, E1Yi =?, E v =?, and E xiyi =?. (i) Draw a scatter diagram for the variables x and y and hence indicate what type of relationship exist between them. (ii) Find the sample correlation coefficient and interpret your result.