Find the 2decimal point smoothing constant a which gives t

Find the 2-decimal point smoothing constant ( a ) which gives the best fit for (based on the MSE criterion) for the in-sample forecast using the exponential smoothing technique. (Note: the “damping factor” in Excel is equal to 1-a ).

I have data in excel but can\'t post it here.

Solution

please provide the data in excel, with a screenshot, images or whatever but we need the data here