The company's market research department Thavisin Limit the need to study the relationship between sales and advertising costs. Information about costs and sales in around 8 years ago are as follows:
The company's market research department Taweesin limited to study the relationship between sales and the cost of advertising. The information on costs and sales in over eight years, is as follows.
Market Research Department of the company limited to orachon relationship between sales and expenses in advertising. Without information about costs and sales around the 8 years are as follows.