zero value in beronoulli trials !!!
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Hi sir,I want to know,why some values in my program equal to zero
This is my program
N=10;
P=0.5;
for K=0:N;
format long e
M =exp((P)^K*((1-P)^N-K)*(factorial(N)/factorial(K)*factorial(N-K)))
display(M)
end
Thanks in advance
采纳的回答
Andrew Newell
2011-4-10
The correct expression is
M =P.^K.*(1-P).^(N-K).*factorial(N)./(factorial(K).*factorial(N-K))
If you have the Statistics Toolbox, you can confirm that this gives the same output as
binopdf(0:N,N,P)
更多回答（2 个）
Oleg Komarov
2011-4-10
Some other parenthesis mistakes corrected:
N=10;
P=0.5;
K=0:N;
M =exp(P.^K.*(1-P).^(N-K).*factorial(N)./(factorial(K).*factorial(N-K)))
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