[수리통계학] Statistics, Sampling Distribution, and Control Charts에 대한 자료입니다.
목차
6. 1 Introduction
6. 2 The Sample Mean and Variance
6. 3 The Sampling Distribution of X
본문내용
표본 평균의 평균은 모집단의 평균과 같다.
E(X) = μ = E(X) = μ x
3. 표본 평균의 표준편차는 모집단의 표준편차를 을
나눈 것과 같다.
4. 모집단의 분포가 정규분포가 아닐 때에도, 표본의 크기
가 커지면, 표본평균의 표본 분포는 정규분포에 근사한다.
이를 중심극한정리(central limit theorem)라 한다
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분야
ppt
