What are the degrees of freedom for the model and error

Reference no: EM131430285

Significance tests for regression coefficients. Recall given Exercise. Due to missing values for some students, only 86 students were used in the multiple regression analysis. The following table contains the estimated coefficients and standard errors:

806_Table 9.jpg

(a) All the estimated coefficients for the explanatory variables are positive. Is this what you would expect? Explain.

(b) What are the degrees of freedom for the model and error?

Exercise
Describing a multiple regression. As part of a study entitled "Predicting Success for Actuarial Students in Undergraduate Mathematics Courses," data from 106 Bryant University actuarial graduates were obtained. The researchers were interested in describing how students' overall math grade point averages are explained by SAT Math and Verbal scores, class rank, and Bryant University's mathematics placement score.

(a) What is the response variable?

(b) What is n, the number of cases?

(d) What are the explanatory variables?

Reference no: EM131430285

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