diff --git a/education/statistics/Sampling.md b/education/statistics/Sampling.md
index b456f91..438926c 100644
--- a/education/statistics/Sampling.md
+++ b/education/statistics/Sampling.md
@@ -22,4 +22,11 @@ Advantages:
 - Law of Averages
 Disadvantages
 - Not always possible
-- Can be very expensive
\ No newline at end of file
+- Can be very expensive
+
+## Bias
+| Bias Type | Description |
+| ---- | ---- |
+| Selection | When the procedure that selects the sample is biased |
+| Non-Response | Those that don't respond to a survey may have different characteristics than those that do respond |
+|  |  |