The following tabulations are actual sales of units for six months and a starting forecast in January. a. Calculate forecasts for the remaining five months using simple exponential smoothing with a=0.1. b. Calculate the Mean Absolute Deviation for all the forecasts, including January's. Note: Round your answer to 1 decimal place. b. Calculate the Mean Absolute Deviation for all the forecasts, including January's. Note: Round your answer to 1 decimal place