revamped directory and made some changes to repeated measures and exploratory script files. plan to change these to Rmd
deleted because changed to an Rmd file
added directory for d-sep test exercise, d_sep_ex and the renamed d-sep_test.Rmd file
worked all the way through the d-sep test of a causal graph using the example from Shipley 2009. still want to figure out how to calculate cumulative Chi-square probability using the C-statistic and degress of freedom
language edit
rearranged many files