8. A t-shirt shop sells clothing at an online platform. They want to determine the relationship between the price of their clothing and the number of t-shirt sold. In 6 weeks period, they change the pricing and collect the number of unit sold. The results are shown in Table 3. Table 3 Week Price (RM) 1 2 3 4 5 6 10 15 20 25 30 25 Number of 68 60 55 48 38 32 units sold Calculate the correlation of coefficient, r. Interpret the result. (5 Marks)