Hello all,

I am stuck on this one so if anyone could offer an suggestions it
would be greatly appreciated.

Prediction Model using double exponential smoothing  to estimate the
linear trend in prices (as originally reported) and extending the
trend to future years.  The base period is about 8-10 years and a
smoothing constant needs to be used to make the trend fairly
responsive to change.  I'm not sure what this constant should be or
how it is obtained.

Thanks.


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