diff --git a/binomial_coeffs.py b/binomial_coeffs.py
index d84b7e0..2eaacd1 100644
--- a/binomial_coeffs.py
+++ b/binomial_coeffs.py
@@ -19,6 +19,8 @@ normalized_coeffs = coeffs / 2 ** N
 print("normalized coefficients:", normalized_coeffs)
 
 expect_x = np.sum(normalized_coeffs) / len(normalized_coeffs)
+print("<x>:", expect_x)
 expect_x_sqrd = np.sum(normalized_coeffs ** 2) / len(normalized_coeffs)
-std = np.sqrt(expect_x_sqrd - expect_x ** 2)
-print("std", std)
+print("<x^2>:", expect_x_sqrd)
+sigma_x = np.sqrt(expect_x_sqrd - expect_x ** 2)
+print("sigma x", sigma_x)