Challenge #24: ARIMA Time Series
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Done! In my solution I first checked how the ARIMA performed against the ETS model by scoring each against the last 6 weeks of withheld data and then used the scored ARIMA model's settings instead of AUTO settings as these may be different to the scored model. This is perhaps the reason why some get slightly different results as the settings aren't set manually.
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That was a fun one! I might have to bring this tool combo into my daily work...
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Solution attached. The was my first exposure to the predictive tools, and it was very useful. I first did this problem a couple of months ago, and it worked fine. However, I was reviewing it recently on a new laptop, and the ARIMA tool was throwing an error. I see that a couple of others have encountered the error too.
I hope Alteryx can figure out how to reproduce and resolve it.
-Ken