hi,
I’m working through C4_W1 Assignment. I’m on the section:
“Define the diff_moving_avg variable.
**Notice that the window_size has already being defined and that you will need to perform the correct slicing for the series to match the validation period.**”
Specifically, I’m working on this line:
# Perform the correct slicing
diff_moving_avg = diff_moving_avg[None:]
From the hint, it implies that the window_size has already been defined in the assignment template, however, it has not been defined.
Any suggestions, would be helpful.
Thank you,
Ed
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Hey Ed!
Excellent question!
Let’s just clear a few things up here!
window_size is defined because we’re given this: diff_moving_avg = moving_average_forecast(None, 50) code snippet.
If we reference the function signature, provided a few code cells above, we find this: moving_average_forecast(SERIES, window_size=30).
So from that we can infer that window_size is defined to be 50.
Now, keep in mind, that we’re working with a subset of the data, and some seasonality, so we’ll want to factor those things into our slicing - as well as the window size.
Hopefully this helps!
Please reach out if you have any further questions!
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