Covariance
Domain: Math & Logic for AI
🎯 Motivation
Measures how two variables change together. Positive means they rise together; negative means one rises as the other falls.
📋 Concrete Example
Study hours and grades have positive covariance. TV hours and grades might have negative covariance.
🔗 Analogy
Like two friends on a seesaw - if one goes up while the other goes down, that is negative covariance.