what is the most important measure of a predictive model? is cross validation the most important measure of a predictive model's effectiveness? why is cross validation important cross validation of a predictive model which is a measure of a model effectiveness why is cross validation important? what is the most important measure of a predictive model's effectiveness? quizlet is cross validation necessary for a model why does cross validation need to be performed why is cross validation important what is the most important measure of a predictive model why p values in predictive models are important what is the most important measure of predictive modeling why does predictive modeling need cross validation what is the most important measure of a predictive model why is cross validation a measure of model effectiveness which is more important for modelling or simulations? which is the most important measure of a predictive model? which is best used for cross validation why is cross validation important