Index: tol/stdlib/math/stat/models/bayesian/bysMcmc/_structs.tol
===================================================================
--- tol/stdlib/math/stat/models/bayesian/bysMcmc/_structs.tol	(revision 5fd136994fed283766a709fb3d999e9e3068eaaa)
+++ tol/stdlib/math/stat/models/bayesian/bysMcmc/_structs.tol	(revision 9c8fe7b8ffdefbf3b542bdc5f31f76a06d3b6162)
@@ -217,5 +217,5 @@
 Struct Bsr.Sigma.Prior.InverseGamma
 {
-  Real Sigma,  // Residuals square average: sigma0
+  Real Sigma2, // Residuals square average: sigma0^2
   Real Weight  // Relative weight of prior versus data : n0/(n0+n)  
 };