Question: Statistical models help us describe and summarize relationships between variables. Understanding how process variables relate to each other helps businesses predict and improve performance. A

Statistical models help us describe and summarize relationships between variables. Understanding how process variables relate to each other helps businesses predict and improve performance. Amarketing managerwants to understand the relationship between advertising and sales. When a new advertising campaign rolls out, they will look at the impact on total sales to determine if it is having a positive influence on sales, and if the cost is truly making a big enough difference.

Review the Advertising vs. Sales chart. Note the scatter plot and the regression equation in the chart.

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