how many customer observations are allowed to be used to build a propensity to buy model what month is the onset of propensity to buy? when should propensity to buy be determined logistic regression sample size how to determine propensity to buy when do you build propensity to buy regression models average propensity to buy data what is sample size for logistic regression when do you use propensity to buy for logistic regression what is the propensity of buying period? logistic regression how many customer observations when do you build ppa models what is the result period of logistic regression how to model propensity to buy how many unique customers are in logistic regression when to use logistic regression logistic regression results for jul product holding when is the propensity to buy time period for logistic regression how to test propensity to buy how many unique customers are in logistic regression