Charleston Stores is a retailer of office supplies. The monthly retail demand for a product is provided below from January 2021 to October 2022.

Demand Data	Year
Month	2021	2022
January	616	758
February	832	974
March	898	940
April	964	1126
May	880	1032
June	1016	988
July	912	1004
August	828	870
September	894	1056
October	850	1020
November	1010
December	969

1. Use the nave method to forecast the demand for November and December 2022.
2. Use the moving average method with 4 periods to forecast the demand for November and December 2022.
3. Use the exponential smoothing method with smoothing constant 0.7 to forecast the demand for November and December 2022. Initialize the forecasting method using the actual demand in January 2021.
4. Fit a trend line to the demand data from January 2021 to December 2021. What is the trend line equation?
5. What is the forecasted demand for November and December 2022 if you use this trend line equation?
6. How reliable is this forecast from a statistical perspective?
7. Compute the MAD of the trend line method used in part (d). Use the forecasts from January 2022 to October 2022 to compute the MAD of the method.
8. What is the interpretation of MAD?
9. Explain clearly why it is important to compute and track forecast accuracy.