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Tina Müller 2016-12-05 23:44:36 +01:00
parent 9dc3c2bb62
commit bba7bfd280
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11
Task/Verify-distribution-uniformity-Chi-squared-test/Hy/verify-distribution-uniformity-chi-squared-test-1.hy Normal file
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(import
[scipy.stats [chisquare]]
[collections [Counter]])
(defn uniform? [f repeats &optional [alpha .05]]
"Call 'f' 'repeats' times and do a chi-squared test for uniformity
of the resulting discrete distribution. Return false iff the
null hypothesis of uniformity is rejected for the test with
size 'alpha'."
(<= alpha (second (chisquare
(.values (Counter (take repeats (repeatedly f))))))))

6
Task/Verify-distribution-uniformity-Chi-squared-test/Hy/verify-distribution-uniformity-chi-squared-test-2.hy Normal file
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(import [random [randint]])
(for [f [
(fn [] (randint 1 10))
(fn [] (if (randint 0 1) (randint 1 9) (randint 1 10)))]]
(print (uniform? f 5000)))