Introduction to the Current Controversy

Case Studies in Statistical Thinking

Justin Bois

Lecturer, Caltech

The Current Controversy

Case Studies in Statistical Thinking

Citation

A. Cornett, C. Brammer, J. Stager, Current Controversy: Analysis of the 2013 FINA World Swimming Championships, Medicine and Science in Sport Exercise, 47, 649-654, 2015

Case Studies in Statistical Thinking

The Current Controversy

Case Studies in Statistical Thinking

Medal counts

Case Studies in Statistical Thinking

How probable is it?

binom_draws = np.random.binomial(12, 0.5, size=100000)

np.sum(binom_draws <= 1) / 100000
0.0033600000000000001
Case Studies in Statistical Thinking

Your tasks

  • Investigate improvement of individual swimmers moving from low- to high-numbered lanes in 50 m events

  • Compute the size of the effect

  • Test the hypothesis that on average there is no difference between low- and high-numbered lanes
Case Studies in Statistical Thinking

Let's practice!

Case Studies in Statistical Thinking

Preparing Video For Download...