Discrete distributionOnly takes values in {0,1}\{0, 1\}{0,1}. Takes ppp at 000 and 1−p1-p1−p at 111P(X=x)=px(1−p)1−xP(X = x) = p^x(1-p)^{1-x}P(X=x)=px(1−p)1−xmean is ppp and variance is p(1−p) p(1-p)p(1−p)xxx is 0 or 1