Feeling Bayes factors: Height difference between males and females
Women have on average a height of 165.8 cm, males of 177.9 cm.
Difference: 12.1 cm. Pooled standard deviation is 7 cm.
Hence, the standardized effect size is around 1.7.
(Source: http://www.econ.upf.edu/docs/papers/downloads/1002.pdf)