The following data represent a company's yearly sales volume and its advertising expenditure over a period of 8
Advertising 32 33 35 34 36 37 39 42
Million of Dollars 15 16 18 17 16 19 19 24
1. Develop a scatter diagram of sales versus advertising and explain what it shows regarding the relationship between sales and advertising.
2. Use the method of least squares to compute an estimated regression line between sales and advertising.
3. If the company's advertising expenditure is $400,000, what are the predicted sales? Give the answer in dollars.
4. What does the slope of the estimated regression line indicate?
1-.The correlation between the variables is positive 2-.The regression line equation Y ^ = 0... View the full answer