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6 changes: 4 additions & 2 deletions pymc/distributions/continuous.py
Original file line number Diff line number Diff line change
Expand Up @@ -214,8 +214,10 @@ def get_tau_sigma(

Parameters
----------
tau: array-like, optional
sigma: array-like, optional
tau : array-like, optional
Precision (tau > 0) (required if sigma is not specified)
sigma : array-like, optional
Standard deviation (sigma > 0) (required if tau is not specified)

Results
-------
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