Instruction 13.17
A microeconomist wants to determine how corporate sales are influenced by capital and wage spending by companies. She proceeds to randomly select 26 large corporations and record information in millions of dollars. The Microsoft Excel output below shows results of this multiple regression.
Note: Adj. R Square = Adjusted R Square; Std. Error = Standard Error
-Referring to Instruction 13.17,the observed value of the F statistic is given on the printout as 25.432.What are the degrees of freedom for this F statistic?
A) 2 for the numerator, 23 for the denominator.
B) 23 for the numerator, 25 for the denominator.
C) 25 for the numerator, 2 for the denominator.
D) 2 for the numerator, 25 for the denominator.

Question

Instruction 13.17
A microeconomist wants to determine how corporate sales are influenced by capital and wage spending by companies. She proceeds to randomly select 26 large corporations and record information in millions of dollars. The Microsoft Excel output below shows results of this multiple regression.
  Note: Adj. R Square = Adjusted R Square; Std. Error = Standard Error
-Referring to Instruction 13.17,the observed value of the F statistic is given on the printout as 25.432.What are the degrees of freedom for this F statistic?
A) 2 for the numerator, 23 for the denominator. 
B) 23 for the numerator, 25 for the denominator. 
C) 25 for the numerator, 2 for the denominator. 
D) 2 for the numerator, 25 for the denominator.

Quizplus · Accepted Answer

The degrees of freedom for the F statistic typically consist of two numbers: the first (numerator) corresponds to the number of groups minus one, and the second (denominator) corresponds to the total sample size minus the number of groups. Option A correctly reflects a common scenario for calculating degrees of freedom in an ANOVA context.

Instruction 13.17 A Microeconomist Wants to Determine How Corporate Sales Are Influenced