The following table includes the information about a monthly time series. 
When the exponential smoothing method with α = 0.1 is applied,what is the MSE?
Definitions:
Group Membership
The inclusion of individuals within a collective that share common goals, interests, or identities.
Life Experiences
The events, situations, and milestones that an individual encounters throughout their life, shaping their personality and outlook.
Culture
The collective norms, values, beliefs, and practices that characterize and guide the behavior of a group or society.
Family
A social group consisting of parents, children, and often extended members, related by blood or law.
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