Multiple choice questions. 1. In goodness of fit test. If k= 25 ( number of different categories or cells) and n =500 ( number of trials) , and H 0 : p 1= p 2=...= p 25=1/25 then expected frequency for each cell is: a. 10 b. 1.5 c. 20 d. 0.5 2. In contingency table. The corresponded degree of freedom for Chi-square in test of independence for 3x4 table is: a. 12 b. 2 c. 3 d. 6 3. Analysis of variance (ANOVA) is a method for testing the hypothesis: a. That three or more population means are equal. b. Those at most three population means are equal. c. That three or more population means are NOT equal. d. That two population means are equal. 4. If the equation of regression is given by 9X -10Y +77 = 0, then the values of b0 (slope) are respectively given by : a. 7.7, 0.9 b. 7.7, 0.7 c. 0.7, 7. d. 0.9, 7.7 ( intercept) and b1 5. If SS (Total) =100 and SS (error) =15 then the value of SS (Treatment) in 1 way ANOVA is? a. 75 b. 115. c. 85 d. None of the above. 6. A fitted linear regression model is y 10 2 x . If x = 1 and the corresponding observed value of y = 11, the residual at this observation is: a. +1 b. -1 c. 0 d. -2