The marketing manager of a beverages company has noticed that there is a relationship between advertising expenditure and sales. To prove this relationship he decides to match sales to the corresponding advertising expenditure (ads) in the last 15 months (Mths). The table below illustrates the marketing manager's findings. Mths 2 3 4 5 6 7 8 9 10 11 12 13 14 1-5 ads 40 170 30 210 100 80 40 90 130 120 20 60 150 80 190 sales 130 470 240 410 290 330 280 380 460 320 140 220 260 210 500 Using the table above:- a Draw a scatter diagram draw to represent the above data. b) Determine the relationship between monthly advertising and sales. c) Determine the monthly sales if monthly advertising expenditure was 200 million