diff --git a/model-building.Rmd b/model-building.Rmd
index 87fdac3..ca97f79 100644
--- a/model-building.Rmd
+++ b/model-building.Rmd
@@ -165,7 +165,7 @@ Nothing really jumps out at me here, but it's probably worth spending time consi
     the relationship between `price` and `carat`?
     
 1.  Extract the diamonds that have very high and very low residuals. 
-    Is there anything unusual about these diamonds? Are the particularly bad
+    Is there anything unusual about these diamonds? Are they particularly bad
     or good, or do you think these are pricing errors?
 
 1.  Does the final model, `mod_diamonds2`, do a good job of predicting