๐Ÿšซ Central Limit Theorem

= the phenomenon that the sampling distribution of the sample โŒ€ Mean approaches a ๐Ÿ”” Normal distribution

๐Ÿ“– Example:

bigger N โ†’ narrower distribution ![[CleanShot 2021-05-04 at 11.27.06@2x.png|500]]

Sample SD

The sample ฯƒ Standard deviation underestimates the population SD ฯƒ โ†’ divide through by N-1 (N = sample size)

Use case