(b) The table below shows the number of absences, x, in a Statistics course and the final exam grade, y, for 8 students. [2] 2 90 4 3 3 7 54 y 95 90 55 70 80 85 Necessary calculations: You may need to find the following quantities to answer the following questions: E1 xi =?, E, x7 =?, E-1Yi =?, E1 y =? , and 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.