# Recent content by KelvinS

1. ### Relationship between effect size, sample size and p-value?

Is there a simple formula that links effect size, sample size and p-value? Specifically, how does the p-value depend on effect size and sample size? Are there any other critical factors involved in this relationship? I'm basically looking to understand how these factors are linked...
2. ### N trials, 3 possible outcomes

I have n independent trials, where the result of each trial is either A, B or C, with probabilities a, b and c respectively, so that a + b + c = 1. What is the probability that all results are either A or B (in any combination/permutation, but no C), including at least one A and at least one B...
3. ### Multivariate correlation coefficient?

Is there a simple definition (formula) for a multivariate correlation coefficient between k binomial variables, assuming that each variable is positive with the same probability/frequency f? What does the CDF for this multivariate binomial distribution look like, and how does it depend on the...
4. ### Correlation betweeen k binomial variables

Hello, This is my first post as a new member, so hope I'm posting this in the right place... I need a general formula to calculate the minimum sample size N required to determine whether k binomial variables are somehow correlated (either positively or negatively) at significance level p<=...