PART 1 Shown below are the sales revenue and advertising cost data for seven companies published by International Advertising Age.

PART 1Shown below are the sales revenue and advertising cost data for sevencompanies published by International Advertising Age.COMPANY ADVERTISING ($ MILLIONS) SALES ($ BILLIONS)Wal-Mart 1,073 351.1Ford Motor 2,577 160.1Airbus 4,898 68.2Reuters Group 2,822 93.2ATT 3,345 63.1Fujifilm 829 91.7Toyota 3,296 207.3Use the above data to develop a regression line to predict the amount of advertising bysales. Compute the ‘r2’ from the regression output.Discuss, in at least 150 words, regression models and identify their relative strengthsand weaknesses.