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文章瀏覽閱讀4.2w次,點(diǎn)贊119次,收藏478次。離散型的分布一,0-1分布有2種結(jié)果,實驗只做1次。P(X = k) = pk(1-p)1-k數(shù)學(xué)期望:E(X) = p方差:Var(X)=p(1-p)二,幾何分布P(A) = p,事件A在第k次**發(fā)生(前k-1次均未發(fā)生)。記作:X ~ G(p)P(X = k) = (1-p)k-1p數(shù)學(xué)期望:1/p方差:(1-p)/p2三,二項分布P(A) = p,在n次..._指數(shù)分布表 |