Recent content by yakoum

I want to know with which function we can draw this graph(I don't know the function). in Statistic, it concern binomial when we calculate confidence interval when nf<20 and n(1-f) <20 Is it clear?

Could you help me please With which function can we draw elliptic abacus in Statistic? I want to draw this function with pgfplots, tikz thank you