Forecasting_1.R - Forecasting Methods: Naïve Method and Simple Mean Method. Smoothing Method: Moving Average (3 and 4-period). Forecast Accuracy Measures: Mean Squared Error (MSE), Mean Absolute Deviation (MAD) and Mean Average Percentage Error (MAPE).

Forecasting_2.R - Naïve Method with Trend.

Forecasting_3.R - Four-Quarter Moving Average (MA(4)) and Centered Moving Average (CMA).

Forecasting_4.R - Explanatory Method: Linear Regression.