Below is another excerpt from my upcoming book on Johnstown by the numbers.  It is a discussion of the job mobility of East central European immigrants in the steel mills in Johnstown, PA from 1900-1950.    Ewa Morawska (1985) in For Bread with Butter: Life-Worlds of East Central Europeans in Johnstown, Pennsylvania, 1890-1940 thoroughly chronicles the […]

This week I had an article published in Data Driven Journalism on the use of Fisher’s exact test with contingency tables.  It is reprinted here. A common problem faced by data journalists  is how to determine if there is a statistical relationship between two categorical variables such as gender, race, or the share of the […]