Mean var std calculation error

Tell us what’s happening:
why my code isn’t pass test module? It matches with sample data output but give an error.

Your code so far

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Challenge: Mean-Variance-Standard Deviation Calculator

Link to the challenge:

Please make sure the link to your project is properly edited as a link.
Also post code, not images.

As for this particular project, the errors are not very helpful for dictionairies and I can only tell you that it has to be EXACTLY the same and you gotta figure out what is different.
For example, if you write “daviation” instead of “deviation” → that’s a failure.

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