Two forecasting models were used to predict the future values of a time series.The forecasts are shown below with the actual values: 
Calculate the mean squared deviation (MSD)for Model 1.
Definitions:
Valid Acceptance
An unqualified expression of assent to the terms of an offer, forming a contract.
Present Intent
A legal term indicating a person's current intention to perform an act or designate a legal status to an item of property.
UCC
Stands for Uniform Commercial Code; a comprehensive set of laws governing all commercial transactions in the United States.
Shipment
The process of transporting goods from one place to another.
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