Business Statistics

Chapter 15 | Multiple Regression Analysis 547

15F1. The following table provides the number of demonstrations

and size of showrooms (in square feet) in which demonstra-

tions have taken place. Fit an appropriate regression model

(taking the number of demonstrations as the dependent vari-

able and showroom size as the independent variable). If re-

quired, carry out square root transformation of the indepen-

dent variable.

Sl. No. Number of

demonstrations

Showroom size

(in square feet)

1 30 1000

2 30 1150

3 55 1250

4 55 1300

5 65 1415

6 65 1500

7 75 1425

8 75 1700

9 89 1670

10 89 1895

11 102 1945

12 102 2000

15F2. The following table provides the sales turnover ...