This document discusses the different forecasting techniques for time series data and evaluates their performance using Bias, MAD, MAPE, and MSE. It also provides insights on which method worked best and how to forecast the next time period based on that method. The document includes quarterly sales data from 2012 to 2016 and graphs representing the plots of the actual sales, deseasonalized sales as well as the forecast sales for the four forecasting methods applied. The subject of the document is Statistics and it does not mention any course code, course name or college/university. The document type is a Statistics Project and the Type of Assignment is not mentioned.