C4W1 Assignment last cell expected output

[Michael_Crabtree]

This was my first submission:

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• Grade Received: 79% • To Pass: 80% or higher

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January 12, 2023 5:22 AM MST (Highest Grade)

So I refreshed the assignment, saved and submitted it. And now the grade is zero.

@balaji.ambresh

I don’t understand what you mean by:

@Michael_Crabtree

how can the same (saved) notebook go from a grade of 79 to zero?

As far as windowing is concerned, the window size to use is 10. Here’s the relevant text:

@adonaivera

in this case, the time window was ten days, that is why they take a year ago (365 days) and add five days and then retake the 365 days, and now you subtract five days left to finish with a window of 10.

The reason you don’t get an error is because the shapes match when it comes to elementwise operations.