diff --git a/visualize.Rmd b/visualize.Rmd
index 96fd7c9..b54d684 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -479,7 +479,7 @@ The algorithm used to calculate new values for a graph is called a __stat__, sho
 knitr::include_graphics("images/visualization-stat-bar.png")
 ```
 
-You can learn which stat a geom uses by inspecting the default value for the `stat` argument. For example, `?geom_bar` shows the default value for `stat` is "count", which means that `geom_bar()` uses `stat_count()`. `stat_count()` is documented on the same page as `geom_bar()`, and if you scroll down you can find a section called "Computed variables". That tells that it computes two new variables: `count` and `prop`.
+You can learn which stat a geom uses by inspecting the default value for the `stat` argument. For example, `?geom_bar` shows that the default value for `stat` is "count", which means that `geom_bar()` uses `stat_count()`. `stat_count()` is documented on the same page as `geom_bar()`, and if you scroll down you can find a section called "Computed variables". That tells that it computes two new variables: `count` and `prop`.
 
 You can generally use geoms and stats interchangeably. For example, you can recreate the previous plot using `stat_count()` instead of `geom_bar()`: