when to use a hold out sample in the final regression model what is the purpose of a hold out sample berk cross validation can berk use a hold out sample which research is used to validate the validity of a sample of a model? what is the purpose of cross validation for a model selection which model use of a hold out sample to predict the outcome is berk used in causal inference when to use hold out for cross validation which is an example of cross validation? what is the purpose of a hold-out sample in an exploratory study? when is cross validation used in inference what type of sample can be used for causal inference when to use hold out data for inference? which is best used in inference analysis? which method is used to infer the impact of a given condition in a regression model can a hold-out sample be used for inference? which of the following is an example of the use of cross validation quizlet? is cross validation unbiased how to use berk's method to infer model selection