when to use cross validation r what is r cross validation? which is the best way to compare model models is leave one out cross validation good why cross validation of model r model comparison which is better for model comparison? what is the r model of cross validation called which statement is true about the use of a linear model what is the best way to compare the models in r how do you compare models in r what is the best way to compare models which approach is best for comparing models? what is the best way to compare model selection is comparing models in r good what is r compared with how to compare model in r how do you compare models in r is model analysis good in r is cross validation for revenue a good idea