kepler Posted August 23, 2013 Share Posted August 23, 2013 Hi, I made a survey to n people asking their sign (12 signs were available). A number k answered Libra. I want to analyze this result. But I'm not sure if I'm doing it right. First I assume: p = 1/12 q = 1 - p Then the Binomial probability is: PROB = nCk * p^k * (1-p)^(n-k) The Binomial Test is: z = (k/n-p)/sqr(p*q/n) and the Chi-Squared is: X^2 =(k - p * n) ^ 2 / (p * n) + ((n - k) - q * n) ^ 2 / (q * n) Am I right? I'm not sure about the value of p in the Binomial Test (should it be = PROB?), and if the Chi-squared can be calculated like that. Kind regards, Kepler Link to comment Share on other sites More sharing options...
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