'delta' in 'expan/core/statistics.py' now takes the *_denominators args also
@@ -19,7 +19,7 @@ def make_delta(assume_normal=True, alpha=0.05, min_observations=20, nruns=10000,
return lambda x, y, x_denominators=1, y_denominators=1: delta(x, y, x_denominators, y_denominators, assume_normal, alpha, min_observations, nruns, relative)
-def delta(x, y, x_denominators, y_denominators, assume_normal=True, alpha=0.05, min_observations=20, nruns=10000, relative=False):
+def delta(x, y, x_denominators=1, y_denominators=1, assume_normal=True, alpha=0.05, min_observations=20, nruns=10000, relative=False):
""" Calculates the difference of means between the samples in a statistical sense.
Computation is done in form of treatment minus control, i.e. x-y.
Note that NaNs are treated as if they do not exist in the data.
