Statistical Rethinking: A Bayesian Course with Examples in R and Stan (Chapman & Hall/CRC Texts in Statistical Science Book 122)

by Richard McElreath

divide each product by the sum of products: A worked example is needed for this to really make sense. So consider again the table from before, now updated using our definitions of p and “plausibility”: Possible composition p Ways to produce data Plausibility [○ ○ ○ ○] 0 0 0 [● ○ ○ ○] 0.25 3 0.15 [● ● ○ ○] 0.5 8 0.40 [● ● ● ○] 0.75 9 0.45 [● ● ● ●] 1 0 0 You can quickly compute these plausibilities

This is not ‘a’ but sigma!l

‘a’ to be read as sigma!

This should be sigma

[α prior]

This should be the prior for sigma