BA578 BA/578 BA 578 FINAL Exam;(Already Graded A)>Texas A&M University - Commerce

BA578 BA/578 BA 578 FINAL Exam;(Already Graded A)>Texas A&M University - Commerce Part A: Multiple Choice (1–11) 1. Using the “eyeball” method, the regression line ^y = 2+2x has been fitted to the data points (x = 2, y = 1), (x = 3, y = 8), and (x = 4, y = 7). The sum of the squared residuals will be a. 7 b. 19 c. 34 d. 8 2. A computer statistical package has included the following quantities in its output: SST = 50, SSR = 35, and SSE = 15. How much of the variation in y is explained by the regression equation? a. 49% b. 70% c. 35% d. 15% 3. In testing the significance of b, the null hypothesis is generally that a. β = b b. β ≠ 0 c. β = 0 d. β = r 4. Testing whether the slope of the population regression line could be zero is equivalent to testing whether the population could be zero. a. standard error of estimate c. y-intercept b. prediction interval d. coefficient of correlation