Throughout our course, we have covered quantitative forecasting methods, including moving averages and exponential smoothing. Your task is to use these techniques on the provided data.

Please proceed as follows:

Apply the moving average forecasting technique for three different periods: $3,4,$ and $5.$ Enter your results for the moving average of $3$ in column D$,$ moving average of $4$ in column E$,$ and moving average of $5$ in column F$.$

Next, use the exponential smoothing technique on the same data. You will use three smoothing parameters: $0\mathrm{.}2,0\mathrm{.}5,$ and $0\mathrm{.}8.$ Record your forecasts for a smoothing parameter of $0\mathrm{.}2$ in column L$,$ smoothing parameter of $0\mathrm{.}5$ in column M$,$ and smoothing parameter of $0\mathrm{.}8$ in column N$.$

Ensure that you apply these forecasting techniques accurately and fill in the specified columns with your findings. This exercise will help you understand how different parameters affect the outcome of sales forecasts.

Once done, upload the Excel file.