stats_cdf_poisson Calculates any one parameter of the Poisson distribution given values for the others &reftitle.description; floatstats_cdf_poisson floatpar1 floatpar2 intwhich Returns the cumulative distribution function, its inverse, or one of its parameters, of the Poisson distribution. The kind of the return value and parameters (par1 and par2) are determined by which. The following table lists the return value and parameters by which. CDF, x, and lambda denotes cumulative distribution function, the value of the random variable, and the parameter of the Poisson distribution, respectively. which Return value par1 par2 1 CDF x lambda 2 x CDF lambda 3 lambda x CDF &reftitle.parameters; par1 The first parameter par2 The second parameter which The flag to determine what to be calculated &reftitle.returnvalues; Returns CDF, x, or lambda, determined by which.