Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Excel's Total Row uses smart SUBTOTAL logic to ignore hidden data, adapt to filters, flag text errors, and measure performance volatility.

Don't let Excel move on without you.

What if you could transform hours of tedious spreadsheet work into just minutes of streamlined efficiency? Simon Sez IT takes a closer look at how Excel’s most powerful functions can transform the way ...

Aggregate functions help turn large datasets into simple summaries used across many fields. GROUP BY and HAVING allow structured grouping and filtering of data for clearer reports. Functions like ...

Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

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 ...