QUESTION 9 A scatter diagram includes the following data points: x 3 2 5 4 5 y 8 6 12 10 14 The sum of squares for error (SSE) is 1. 36.23 2. 16 3. 63.23 4. 46 5. 17.65 QUESTION 10 Consider the following information, S = 500 , S, = 750, Sxy = 100 and n = 6, the standard error of estimate is: 1. 30.21 2. 912.5 3. 24.933 4. 12.247 5. 3650 QUESTION 11 The regression line y = 3 + 2x has been fitted to the data points (4; 8), (2; 5) and (1; 2). The sum of the squared residuals will be 1. 7 2. 22 3. 8 4. 15 5. 10QUESTION 12 The owner of a furniture store recorded the monthly advertising budget (Ft rands} and sales (Fl millions} for a sample of 8 months. The data and the other information needed for the calculations are given here Advertising 23 46 60 54 28 33 25 31 Sales l9.6 11.3 12.3 9.8l8.9l12.5 12.0 11.4 xy = 3352.9 x = 300 y = 33.3 x2 = 12620 3:2 = 989.15 2 Z Z Z Z s. = 13.99 S. = 1.44 The coefficient of determination is 1. 0.98? 2. 0.453 3. 0.925 4. 0.295 5. 0.087 QUESTION 13 Consider the regression line 32" = 4.4+0.60x where x represents the actual length and y is the ideal length n = 119. Calculate the residual value for a female in ideal length when the actual length equals to 100 cm. 1. -4 2. 104 3. 35.6 4. 4 5. 60 QUESTION 14 In testing the hypotheses H0 : The two population locations are the same, against H1 : The two population locations are different, the statistics :11 = 5, T1 = 22, :12 = 9 and T2 = 83 were calculated from two independent samples. Assuming that the two samples are not normally distributed, which of the following statements is correct? 1. The Wilcoxon rank sum signed test is not appropriate. 2. At the 10% level of significance the rejection region is T > 25 or T