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Head First Statistics
CH. 11 Estimating populations
        and samples



  아키텍트를 꿈꾸는 사람들
     발표 : 김연기
Making Estimates Using a
        Sample
Making Estimates Using a
            Sample
• 점추정(Point Estimator) : 샘플의 평균
  (mean) 값
• 구갂 추정(Interval estimation) : 샘플의 평
  균의 가능성이 있는 구갂.
Point Estimator
Estimate Population Variance
Estimate Population Variance
Estimate Population Variance
Predicting Population Proportion
Expectation
Variance
Question
Distribution Of
Distribution Of
Distribution Of



이항 분포 (The Binomial distribution) : 연속된 n번의 독립적 시행에
서 각 시행이 확률 p를 가질 때의 이산확률 분포.



쁘아송 분포(The Poisson Distribution) : 단위 시갂 안에 어떤 사건이
몇번 빌생할 할 것인지 표현하는 이산확률 분포
Central Limit Theorem
원래 모집단이 어떤 분포를 이루고 있는지에 상관없이, 여러 번의 조사를
통해 얻어진 평균들의 표본값들은 정규분포를 이룬다.

참고 : http://blog.daum.net/gongdjn/61

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Head first statistics ch.11