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 1. [Unit 1 - Introduction to Data Science and Big Data](Notes/Unit%201%20-%20Introduction%20to%20Data%20Science%20and%20Big%20Data)
 2. [Unit 2 - Statistical Inference](Notes/Unit%202%20-%20Statistical%20Inference)
 3. [Unit 3 - Big Data Analytics Life Cycle](Notes/Unit%203%20-%20Big%20Data%20Analytics%20Life%20Cycle)
+4. [Unit 4 - Predictive Big Data Analytics with Python](Notes/Unit%204%20-%20Predictive%20Big%20Data%20Analytics%20with%20Python)
 
 ### Codes