PCR - December 2004 - Task 1.4
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What the hell?
How on earth do I get my head round this? The forecast (seasonal variation + trend) I'm fine with, but the trend formula has gone right over my head!
EDIT: Using y= mx+c
Would it be y= bx+a
x = (time to date+1)
?
How on earth do I get my head round this? The forecast (seasonal variation + trend) I'm fine with, but the trend formula has gone right over my head!
EDIT: Using y= mx+c
Would it be y= bx+a
x = (time to date+1)
?
0
Comments
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Re:PCR - December 2004 - Task 1.4
Hi ,
trend is always y=a+bx which is given in the question.
We have been told we dont need to know this formula as it will always be given in any question on the exam.
Hope this helps,
Jackie0 -
Re:PCR - December 2004 - Task 1.4
But adopting the "y=mx+c" method and using the letters like we would in linear regression would be correct?0