EXERCISES 15.1 The results of a multiple regression based on nine observations are shown in Table 15.11. Based on these results answer the following questions: a. What percentage of variance is explained by the regression? TABLE 15.11 Results of a Multiple Regression Analysis 1.3 2.7 0.5 5.0 bj 3.6 0.6 4 8.3 Intercept 75.3 Coefficient of multiple correlation = 0.95 Standard deviation of errors = 12.0 F-value = 14.1 b. Is the regression significant at the 90% confidence level? c. Which variable has the highest coefficient? d. Which variable is most significant? e. Which parameters are not significant at 90%? f. What is the problem with this regression? g. What would you try next? EXERCISES 15.1 The results of a multiple regression based on nine observations are shown in Table 15.11. Based on these results answer the following questions: a. What percentage of variance is explained by the regression? TABLE 15.11 Results of a Multiple Regression Analysis 1.3 2.7 0.5 5.0 bj 3.6 0.6 4 8.3 Intercept 75.3 Coefficient of multiple correlation = 0.95 Standard deviation of errors = 12.0 F-value = 14.1 b. Is the regression significant at the 90% confidence level? c. Which variable has the highest coefficient? d. Which variable is most significant? e. Which parameters are not significant at 90%? f. What is the problem with this regression? g. What would you try next