Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. David Kindness is a Certified Public Accountant ...
Have you ever grouped data in Excel only to find your months sorted alphabetically instead of chronologically? It’s a frustrating quirk of the GROUPBY function, one that can turn a clean dataset into ...
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