1. The following chart is data over an 8-month period that shows how much a company spent in advertising and the sales revenue for that month MONTH ADVERTISING $SALES $ March 900 56000 April 2700 89200 May 3150 98500 June 1300 54000 July 3400 97000 Aug 1500 56000 Sept 2300 93000 Oct 2250 79000 a) What is the correlation coefficient? (round to 2 decimals) describe how you utilized excel to arrive at this number (recommended) or show the formula you utilized to arrive at this answer b) Is it a positive or negative correlation