Game 2


"In this example you should think of A, B, C, and D as โ€œpretreatmentโ€ variables. (The treatment, as usual, is X.) Now there is one back-door path Xโ†Aโ†’ Bโ†Dโ†’Eโ†’Y. This path is already blocked by the collider at B, so we donโ€™t need to control for anything." (Pearl, p. 160)

Game 2 in BayesiaLab

For Game 2, we have once again created a causal Bayesian network, which is available for download here:โ€‹

  • Note that the associated probability tables are fictitious. For our purposes, only the causal graph is relevant.

  • As before, we select Main Menu > Analysis > Visual > Graph > Influence Paths to Target to analyze the paths from X to Y.โ€‹

  • We can see that there is no noncausal path.

  • Hence, there is then no need to control for any variables.

Last updated


Bayesia USA

Bayesia S.A.S.

Bayesia Singapore

Copyright ยฉ 2024 Bayesia S.A.S., Bayesia USA, LLC, and Bayesia Singapore Pte. Ltd. All Rights Reserved.