3 -GIVING THE FOLLOWING DATA REGARDING SALES USING REGRESSION (LINEAR MODEL). 20 MARKS FIRST :CALCULATE THE VARIABLES OF THE EQUATION 1-linear regression model how will be the orders by week 7 22. data of the previous 4 weeks are represented in the following table? Week 1 3 4 3 4 3 10 Sales with millions x^2-30 Ex=10 y 20 Exy-60 Averagex -2.5.....average y - 5 SECOND : STATE THE REASON WHY ACCOUNTANTS USE THIS THIS METHOD TO FORCAST