switch from np.math to math

Author: jdkent

pymare/results.py

@@ -4,6 +4,7 @@
 from functools import lru_cache
 from inspect import getfullargspec
 from warnings import warn
+import math
 
 import numpy as np
 import pandas as pd
@@ -322,7 +323,7 @@ def permutation_test(self, n_perm=1000):
 
         # Calculate # of permutations and determine whether to use exact test
         if has_mods:
-            n_exact = np.math.factorial(n_obs)
+            n_exact = math.factorial(n_obs)
         else:
             n_exact = 2**n_obs
             if n_exact < n_perm: