From sales to advertising costs of certain items, which are stored on a monthly basis, total 12 months that have come to the regression equation and various statistics are as follows:
The sales data to the cost of advertising the product which is collected monthly data were taken 12 months for the regression and the following statistics.
From the information record sales and advertising costs of commodities, which keep a monthly total 12 months. The data obtained for the regression equation and statistics such as follows.