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#data

3 articles

Reading Dashboards Without Deceiving Yourself
data

Reading Dashboards Without Deceiving Yourself

Dashboards lie via framing more than fabrication — questions for any metric, visualization tricks, correlation traps, and a trusting-the-numbers checklist.

3 min read
Spreadsheet Mastery: The Features Beyond the Basics
data

Spreadsheet Mastery: The Features Beyond the Basics

Beyond SUM and pie charts — absolute references, lookups, pivot tables, and hygiene habits that turn spreadsheets into analysis tools.

3 min read
SQL for Non-Developers: The 20% You'll Actually Use
data

SQL for Non-Developers: The 20% You'll Actually Use

Learn the small SQL subset that covers almost every real-world question — SELECT, WHERE, GROUP BY, JOIN explained through a business example anyone can follow.

3 min read