The bookings taken by an airline on the first eight days after a well-publicized aviation accident were:
(a) Produce predictions up to and including day 9 using the exponential smoothing model with a smoothing constant of 0.3 and calculate the mean squared deviation (MSD) of the errors.
(b) Construct predictions to day 9 using a smoothing constant of 0.6 and compute the MSD of the errors. Is this a better model?