Question: An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: (4 year ago Quantity sold

An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: (4 year ago Quantity sold was 1055), (3 year ago Quantity sold was 1125 ), (2 year ago Quantity sold was 1792 ) and the last year Quantity sold was 1925 . The previous trend line had predicted 1204 for three years ago, 1259 for two years ago and 1313 for last year. What was the mean squared error (MSE) for these forecasts?

a. 0.23

b. 408

c. 221624.67

d. 22.85

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