Which of the following variables are qualitative? Sales Advertising Number of Co

Question

Which of the following variables are qualitative? Sales Advertising Number of Competitors Discounts Warranty None of the above Based on the linear regression using all four independent variables, how much of the variation in the response variable is explained by the linear model? 0 304.7 Not much 0.897 80.4% 19.457 Which of the following variables have significant slopes (use alpha of 0.05)? Advertising Number of Competitors Discounts Warranty (in years) Number of Competitors and Warranty (years) Advertising and Discounts Which of the following variables is (are) not significant (use alpha of 0.05)? Advertising Number of Competitors Discounts

Explanation / Answer

19 ) None of the variables are qualitative in nature , as all the variables are quantifiable and can be measured on a number scale

20 ) This is explained by the r2 value , which is 0.8037 . This means that model is able to capture 80.4% of the variation of the datta

21) to check this we must see the p values of the variables in the output table. All the variables whose p value is less than 0.05 are considered signifcant .

warranty and competitors , hence e

22) the p value of advertising and discounts are not signifcant as the p value is greater than the alpha of 0.05.

hence a and c

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.