Dear Community, I am new to R and have a question concerning the causality () test in the vars package. I need to test whether, say, the variable y Granger causes the variable x, given z as a control variable. I estimated the VAR model as follows: >model<-VAR(cbind(x,y,z),p=2) Then I did the following: >causality(model, cause="y"). I thing this tests the Granger causality of y on the vector (x,z), though. How can I implement the test for y causing x controlled for z? Thus, the F-test comparing the two models M1:x~lagged(x)+lagged(z) and M2:x~lagged(x)+lagged(y)+lagged(z)? Thank you in advance. Best Regards
Granger Causality in a VAR Model
2 messages · Ivan, Pfaff, Bernhard Dr.
The below email was cross-posted to R-Sig-Finance and has been answered there.
-----Urspr?ngliche Nachricht----- Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im Auftrag von ivan Gesendet: Montag, 4. April 2011 20:24 An: r-help at r-project.org Betreff: [R] Granger Causality in a VAR Model Dear Community, I am new to R and have a question concerning the causality () test in the vars package. I need to test whether, say, the variable y Granger causes the variable x, given z as a control variable. I estimated the VAR model as follows: >model<-VAR(cbind(x,y,z),p=2) Then I did the following: >causality(model, cause="y"). I thing this tests the Granger causality of y on the vector (x,z), though. How can I implement the test for y causing x controlled for z? Thus, the F-test comparing the two models M1:x~lagged(x)+lagged(z) and M2:x~lagged(x)+lagged(y)+lagged(z)? Thank you in advance. Best Regards
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