This is documentation for an old release of SciPy (version 0.10.1). Read this page Search for this page in the documentation of the latest stable release (version 1.15.1).

scipy.special.bdtr

scipy.special.bdtr(x1, x2, x3[, out]) = <ufunc 'bdtr'>

y=bdtr(k,n,p) returns the sum of the terms 0 through k of the Binomial probability density: sum(nCj p**j (1-p)**(n-j),j=0..k)