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Exponential Smoothing

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5. The number of girls who attend a summer basketball camp has been recorded for the seven years the camp has been offered. Use exponential smoothing with a smoothing constant of .8 to forecast attendance for the eighth year.

47, 68, 65, 92, 98, 121, 146

6. Monthly sales at a coffee shop have been analyzed. The seasonal index values are

Month Index
Jan 1.38
Feb 1.42
Mar 1.35
Apr 1.03
May .99
June .62
July .51
Aug .58
Sept .82
Oct .82
Nov .92
Dec 1.56

and the trend line is 74123 + 26.9(t).
Assuming there is no cyclical component, forecast sales for year 8 (months 97 - 108).

See attached file for full problem description.

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Exponential Smoothing for time series data.

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