computed the forecasts required, and calculated MAD for each forecast. I found out that the MAD was the least for Moving average using k $=2,$ thus the best method to forecast is Moving Average with k $=2.$

Using the Moving average with k $=2,$ I forecasted. It forecasted that the stock for Microsoft om $4/18/2024$ would be $$410\mathrm{.}57,$ and the actual closing price was $$411\mathrm{.}81,$ which is pretty close but not accurate