i.i.d. assumption, iid
independent and identically distributed
Reverse of Markov Chain sequence data
Random Variables, when there are multiple, are mutually independent and all have the same Probability Distribution
통계학에서는 좋은 가정이 성립되지 않을 때, 추정량에 어떤 악영향이 있으며 어떤 대처를 해야 하는지 다룬다
the n samples your observed are considered as random variables.
같은 샘플이니 같은 분포가지는 랜덤변수일것