# Deterministic posterior predictive?

**URL:** <https://discourse.pymc.io/t/deterministic-posterior-predictive/13280>\
**Category:** General\
**Created:** [November 14, 2023, 10:37am UTC](https://discourse.pymc.io/t/deterministic-posterior-predictive/13280 "2023-11-14T10:37:30Z")\
**Posts on this page:** 1\
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**Author:** ![ricardoV94](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/ricardov94/32/5775_2.png) [@ricardoV94](https://discourse.pymc.io/u/ricardoV94)\
**Post date:** [November 14, 2023, 10:57am UTC](https://discourse.pymc.io/t/deterministic-posterior-predictive/13280/5 "2023-11-14T10:57:39Z")

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`var_names` specifies which variables to sample. If you sample an RV you will get new draws from the posterior predictive (which for root RVs is the prior).

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