Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Messy Excel formulas are more than just an eyesore—they're harder to maintain. Every repeated cell reference and tangled parenthesis makes your work difficult to audit, edit, and share. That's why you ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. What Is the Calculating Compound Annual Growth Rate ...

Marshall Hargrave is a stock analyst and writer with 10+ years of experience covering stocks and markets, as well as analyzing and valuing companies. Yarilet Perez is an experienced multimedia ...

An inherent principle of publication is that others should be able to replicate and build upon the authors' published claims. A condition of publication in a Nature Portfolio journal is that authors ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Meirav Devash Bad mascara can ruin your day, clumping your eyelashes into a ...