diff --git a/education/statistics/Sampling.md b/education/statistics/Sampling.md
index cf87890..ee536a8 100644
--- a/education/statistics/Sampling.md
+++ b/education/statistics/Sampling.md
@@ -40,4 +40,6 @@ The expected value for a sample percentage equals the population percentage. The
 
 To determine by how much the standard error is affected, if `n` is the sample size, the standard error changes by $\frac{1}{\sqrt{n}}$
 
-Accuracy in statistics refers to how small the standard error is. A smaller standard error means your data is more accurate.
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+Accuracy in statistics refers to how small the standard error is. A smaller standard error means your data is more accurate.
+
+$$ \sqrt{\frac{(\% of 1)(\% of 0)}{}}}
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