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Assume the following information about the impact of advertising on sales. Union Coop hypermarket in Dubai advertises weekly in the newspapers. And it is considering increasing its advertising budget. Before doing so, Union Coop decides to evaluate the past effectiveness of these ads. Five weeks and sampled, and the advertising, and the advertising Dirham (AED 1,000) and sales (AED 1,000) volume for each of these is shown in the Table. Fill in the remaining missing data and then develop the regression equation that would help Union Coop evaluate its advertising. What is your estimate for sales if the advertising in the local Newspapers appeared five times last week? Calculate the coefficient of correlation and efficient determination. Please interpret the value of coefficient determination in the context of this problem.

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