mqr.spc.util.

c4_fn

mqr.spc.util.c4_fn(n)

Direct calculation of the c4 unbiasing constant from the gamma function.

Evaluates:

\[c_4(n) = \frac{ \Gamma\left(\frac{n}{2}\right)\sqrt{\frac{n}{n-1}}}{\Gamma\left(\frac{n-1}{2}\right)} .\]

Parameters:

nint

Sample size.

Returns:

float

The value of c4 for the given sample size.