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STATISTICS 2ND QUIZ - Coggle Diagram

- - - - E(X⋅Y)=E(X)⋅E(Y) ; x,y indep
    - - E(X) = x1p1 + x2p2 + ... + xnp
  - - - σ(x+y)²=σx²+σy²+2cov(x,y)
        
        portfolio=(w,1-w) E(P)=w⋅E(X)+(1-w)⋅E(Y)
- - - - E(X)=n⋅p σx²=n⋅p⋅q
        
        P(success)=p P(failure)=q
  - - - E(X) = np σX=√ npq N-n/N-1
        
        p=n1/N q=N-n1/N