Design a Forecasting Method that might be better suited to the given historical data pattern $($that is$,$ your

forecasting method should address both the Trend and Seasonal data pattern$).$ Then

i$)$ use your Forecasting Method to forecast the # of participants for Quarter $1,2020$ to Quarter $4,2020.$

ii$)$ compare the forecasting accuracy of Your Forecast Method and the forecasting methods from

Questions $1)2)$ by using the Same Forecast Error Measurement as you used in Question $4).$ That is$,$

$(1)$ use your Forecasting Method to forecast the # of participants for Quarter $1,2011$ to Quarter $4,$

$2019.$

$(2)$ Then, using the Same Forecast Error Measurement for the same range of forecasts as you used in

Question $4),$ calculate the Forecast Error from your method.