satterthwaite

superglm.satterthwaite(

q: float,

weights: NDArray,

df: NDArray | None = None,

) → tuple[float, float, float]

Satterthwaite approximation: match first 2 moments to c * chi²(d).

Parameters:

qfloat

Test statistic.

weightsarray

Weights of the chi² mixture.

dfarray, optional

Degrees of freedom per term (default all 1).

Returns:

p_valuefloat

Upper tail probability under c * chi²(d).

cfloat

Scale parameter.

dfloat

Effective degrees of freedom.