The following time series shows the number of units of a particular product sold over the past six months. 
a.Compute a 3-month moving average (centered) for the above time series.
b.Compute the mean square error (MSE) for the 3-month moving average.
c.Use = 0.2 to compute the exponential smoothing values for the time series.
d.Forecast the sales volume for month 7.
Definitions:
National Rifle Association
An American nonprofit organization that advocates for gun rights.
Gun-Free Zones
Designated areas where the possession of firearms is not allowed, typically to enhance safety in those areas.
Armed Guards
Security personnel equipped with weapons to protect a person, place, or object.
Fallacy of Amphiboly
A logical fallacy resulting from ambiguous grammar that leads to a misinterpretation of a statement or argument.
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