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Update ex_ttest.py by dmarinere · Pull Request #68 · lazyprogrammer/machine_learning_examples · GitHub

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Update ex_ttest.py #68

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Update ex_ttest.py #68

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4 changes: 2 additions & 2 deletions ab_testing/ex_ttest.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
# From the course: Bayesin Machine Learning in Python: A/B Testing
# From the course: Bayesian Machine Learning in Python: A/B Testing
# https://deeplearningcourses.com/c/bayesian-machine-learning-in-python-ab-testing
# https://www.udemy.com/bayesian-machine-learning-in-python-ab-testing
from __future__ import print_function, division
Expand Down Expand Up @@ -42,4 +42,4 @@
df = (s1_sq / N1 + s2_sq / N2)**2 / ( (s1_sq*s1_sq) / (N1*N1 * nu1) + (s2_sq*s2_sq) / (N2*N2 * nu2) )
p = (1 - stats.t.cdf(np.abs(t), df=df))*2
print("Manual Welch t-test")
print("t:\t", t, "p:\t", p)
print("t:\t", t, "p:\t", p)
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