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Head first statistics ch.11
 

Head first statistics ch.11

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    Head first statistics ch.11 Head first statistics ch.11 Presentation Transcript

    • Head First StatisticsCH. 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 Of이항 분포 (The Binomial distribution) : 연속된 n번의 독립적 시행에서 각 시행이 확률 p를 가질 때의 이산확률 분포.쁘아송 분포(The Poisson Distribution) : 단위 시갂 안에 어떤 사건이몇번 빌생할 할 것인지 표현하는 이산확률 분포
    • Central Limit Theorem원래 모집단이 어떤 분포를 이루고 있는지에 상관없이, 여러 번의 조사를통해 얻어진 평균들의 표본값들은 정규분포를 이룬다.참고 : http://blog.daum.net/gongdjn/61