Exploring the variables with more influence
In this section, we will undertake a multi-regression exercise exploring the variables that could influence the sales revenue of a business. Please download the Excel worksheet from the Technical requirements section at the beginning of this chapter. Open the Sales inventory sheet. The first task of the job is to find which are the two most influential variables, X and Y, over a sales-revenue
results variable. The variables on the worksheet that could influence sales and revenue are as follows:
- Number of hours out of service
- Material rotation
- Online marketing
- Sector sales
- Distance (Km) to competing stores
To find the two most influential variables, follow this process:
- Use the t-statistics and the p-value analysis returned by the regression function. To validate the variables, examine the 3D chart and ascertain whether there is an obvious relationship between them.
- Understand the influence of...