I am so far off track with my Nanodegree, the deadline came and went yesterday.
Luckily, what also came yesterday was an email from Udacity explaining that they were giving me another 4 weeks to complete the course!

This is something I had read about before on their website, but I still really wanted to complete the course on schedule. Unfortunately, my stubbornness got in the way. I really didn’t want to turn in my project when I still didn’t really understand ARIMA and ETS modeling.
ARIMA and ETS models are used to forecast time series data. I can create them with Alteryx and test their accuracy, but I can’t tell you how I turned out with a particular model.
That’s a problem.
Although it isn’t one of the criteria for completing the project, I just didn’t feel like I could submit my project without understanding why the solutions ARE the solutions.
I am grateful for Udacity’s generosity in extending courses like this when the deadline comes up, otherwise I would have had to submit something I wasn’t happy with.
Understanding ETS and ARIMA models is really the final hurdle and then I will be DONE.