The Wilson Company is interested in forecasting demand for its XG-667 product for quarter 13 based on 12 quarters of data. The following shows the data and the double exponential smoothing model results for periods 1-12 using alpha = 0.20 and beta = 0.40. 
Based on this information, what is the MAD value for quarters 2-12?
Definitions:
Line-and-Staff Structure
An organizational framework combining direct revenue-producing roles (line) with supportive roles (staff) to provide expertise and advice.
Q16: Consider the situation in which a human
Q22: In a goodness-of-fit test about a population
Q38: The x-bar chart is based on the
Q39: means the process people use to make
Q39: Under what conditions should a decision maker
Q41: The standard error of the estimate is
Q48: Business analytics offers powerful ways of digging
Q96: The Wilcoxon signed rank test is used
Q110: If a simple least squares regression model
Q131: A decision maker is considering including two