The following table includes the information about a monthly time series. 
When the exponential smoothing method with α = 0.5 is applied,what is the MSE?
Definitions:
Private Goods
Goods that are both excludable and rival in consumption.
Industrial Machinery
Machines and equipment designed and used in the manufacturing and production sector.
Factor Of Production
Resources utilized in the creation of goods and services, including land, labor, capital, and entrepreneurship.
Constant Returns To Scale
a condition in production where increasing the inputs by some proportion leads to an increase in output by the same proportion.
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