Two or more variables

Practicing Statistics Interview Questions in Python

Conor Dewey

Data Scientist, Squarespace

Types of relationships

¹ Wikimedia

What is correlation?

• Statistical relationship between variables
• Stronger correlation = more information

¹ Wikimedia

Covariance

 

Pearson's correlation

 

Pearson's correlation

¹ Wikimedia

Correlation vs. causation

 

¹ xkcd

Correlation vs. causation

¹ Correlation does not mean Causation

Summary

• Types of relationships
• Review of correlation
• Covariance
• Pearson's correlation
• Correlation vs. causation

Let's prepare for the interview!

Practicing Statistics Interview Questions in Python