Concepts2
📚TheoryIntermediate
Central Limit Theorem
The Central Limit Theorem (CLT) says that the sum or average of many independent, identically distributed variables with finite variance becomes approximately normal (Gaussian).
#central limit theorem#berry-esseen#lindeberg+12
∑MathIntermediate
Variance and Covariance
Variance measures how spread out a random variable is around its mean, while covariance measures how two variables move together.
#variance#covariance#standard deviation+12