add data quality checks to lab 5

Author: afeld

labs/lab_05.md

@@ -1,4 +1,4 @@
-# Lab 5 - IN PROGRESS
+# Lab 5
 
 ## Objective
 
@@ -22,6 +22,12 @@ You'll [pair](../docs/pairing.md) in your group, repository, and dataset from [L
 
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+### [Data quality checks](../lectures/lecture_05.md#data-quality-checks)
+
+Set up at least three different data quality checks with pytest.
+
+---
+
 ## Submit
 
 [Submit the links to the pull requests via CourseWorks.](https://courseworks2.columbia.edu/courses/210480/assignments)

lectures/lecture_05.md

@@ -106,6 +106,7 @@ Seeing projects with `<name>2.py`. Splitting code up into smaller files will hel
 ## Data quality checks
 
 - Can be flexible, like checking for standard deviation or X% matching certain criteria
+- [Things to check for when cleaning data](https://computing-in-context.afeld.me/lecture_17.html#data-cleaning)
 - There are tools that help with this
 
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