dear all members i am trying to simulate data with mixed ordered categorical and dichotomous variables with 200 observation and 10 var. 5 ordered categorical and 5 dichotomous and i want to put a high correlation between variables so i must find correlation between dichotomous and the correlation between ordered categorical and correlation between mixed ordered categorical and dichotomous data. i know all types of corr. except correlation between mixed. i hope anyone help me to solve this problem. Many thanks in advance Thanoon [[alternative HTML version deleted]]