reference: statistics data analysis and decision modeling, 5th editions, Evans

QUESTION 2 Use the three period Moving Average method to forecast the sales for June using the data given below (Use two decimal points): Jan 71 Feb 56 Mar 98 Apr 88 May 89 QUESTION 3 In the context of forecasting, an index O Is a detailed list of different variables. O Is a combination of indicators with associated weights. O A shortcut that points to where the data is. O Is independent of X (that is, time), hence the name Index