Chapter 2, Exercise 4; pg 31: table 2.3.2 (CCAW)

Posted on the companion web page is the 4th exercise for chapter 2, which shows how to create the phi correlation coefficient (i.e. correlation between two dichotomous variables) and the spearman rank order correlation (i.e. correlation between data that are rank ordered). Use data sets C0204dt.txt and C0204DT.txt from the Cohen Cohen Aiken West text.