Question sheet;
1.
In the σ / √ N for the mean control chart, will the σ be given? Because
when I tried to find the σ for the mean of the means aka the x barbar, I
could never get the same value as in the example in class.
2.
For the seasonal component of the multiplicative model: = [(spring
06/mean06) +(spring 07/mean 07)] / 2, will we ever use 3 years and divide
by 3? Or will forecasting be based on just 2 years? The reason I ask:
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This note was uploaded on 04/11/2009 for the course ARE 157 taught by Professor Whitney during the Fall '08 term at UC Davis.
 Fall '08
 WHITNEY

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