7fed8273b58168f151ee87e146847173816c735bbe0aaef1c18591e011c2ded2

7fed8273b58168f151ee87e14781767315045a999e848d9ab963fb86673f1f98

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2.4.1-1 답에 s도 포함하여 적어야하죠?
편향 : (1-n)*[(s+1)/(n+2)] (단, s는 0 to n)
분산 : [(s+1)/(n+2)]를 p라할 때 npq

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