Forecast, MAD and Bias

Question

1. The demand for a newly introduced luxury car has been shown below. The experts forecasted a sale of 100 cars for the month of March. With a smoothing constant of 0.15 and using first order exponential smoothing what is the forecast for the month of August? Also calculate MAD and Bias and give your comments on the same.

Month	Actual Demand
March	150
April	200
May	100
June	50
July	150