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Data Analytics: Statistics & Data Visualization

Correlation

What r measures, what it does not, and when it lies.

Level
Beginner
Lessons
1
Total time
14 min
Simulations
2
1 free lessonFree module
Tools you'll use
  • Python
  • pandas
  • NumPy
Skills
  • Pearson correlation
  • Spearman
  • Correlation vs causation
Try it now — free

This is the real simulation from the module. No account needed.

What you will be able to do

  • Read a correlation coefficient without inferring causation
  • Know when Pearson misleads and Spearman is more honest
  • Spot the outlier that fakes a correlation

Syllabus

1 lesson · 14 min

Every lesson's title and summary is public. The lessons themselves open once you own the track. The lesson marked free can be read in full right now, no account needed.

Every lesson in Data Analytics: Statistics & Data Visualization

  1. What Correlation Actually Measures

    14 min

    r measures exactly one thing: how close the points sit to a straight line. That is narrower than people assume.

    FreeRead it free Simulation

Practice included

Included with the track. Quizzes are graded on the server; competitions have a live leaderboard.

  • QuizQuiz: Correlation and Bayes
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