From b684b66e8ab3fb21ac9db27c1fd5b11ae29d4ee4 Mon Sep 17 00:00:00 2001
From: Warren Weckesser <warren.weckesser@gmail.com>
Date: Tue, 23 Sep 2025 09:31:17 -0400
Subject: [PATCH] Fix the name in the inverse_chi_squared mean error message.

---
 include/boost/math/distributions/inverse_chi_squared.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/math/distributions/inverse_chi_squared.hpp b/include/boost/math/distributions/inverse_chi_squared.hpp
index 1a3c680d2..ca7e7f87e 100644
--- a/include/boost/math/distributions/inverse_chi_squared.hpp
+++ b/include/boost/math/distributions/inverse_chi_squared.hpp
@@ -289,7 +289,7 @@ BOOST_MATH_GPU_ENABLED inline RealType mean(const inverse_chi_squared_distributi
    if(df <= 2)
       return policies::raise_domain_error<RealType>(
          function,
-         "inverse Chi-Squared distribution only has a mode for degrees of freedom > 2, but got degrees of freedom = %1%.",
+         "inverse Chi-Squared distribution only has a mean for degrees of freedom > 2, but got degrees of freedom = %1%.",
          df, Policy());
   return (df * scale) / (df - 2);
 } // mean