Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.

Excel processes the range (A1:A10) by converting it into an array in memory. This array is what Excel works with to calculate the sum. The distinction is subtle but important: while the range is the ...

If you're tired of repeated calculations, hard-to-read formulas, and sluggish Excel worksheets, the LET function is your solution. It assigns simple names to complex calculations, making formulas ...

Caroline Banton has 6+ years of experience as a writer of business and finance articles. She also writes biographies for Story Terrace. Thomas J. Brock is a CFA and CPA with more than 20 years of ...

Have you ever stared at a colorful Excel spreadsheet, wondering how to quickly calculate totals or counts based on cell colors? It’s a common frustration for anyone managing large datasets. While ...

Volatility is troublesome for many investors. Value changes in your stocks, your portfolio, or an index can keep you up at night -- or worse, push you to make emotional decisions you later regret.

Compounding increases savings exponentially by reinvesting earnings. Calculate compounding on a lump sum using initial amount, rate, and time. Long-term investing significantly amplifies the end value ...

Chess, a zero-sum game, here seen played at a strategy session at Camp David in 1978 between the Israeli prime minister and the US National Security Advisor. The concept of zero-sum thinking ...