Having developed a statistical model to predict percentage body fat, what is the purpose of conducting cross-validation?
A) To test the accuracy of the prediction.
B) To test the model on a different population.
C) To evaluate the covariance within the model.
D) To measure the degree of difference in the residuals.

Question

Quizplus · Accepted Answer

Cross-validation is used to estimate the accuracy of the developed statistical model. By testing the model on a different subset of the data, it is possible to evaluate how well the model generalizes to new data that was not used during model development. This provides an estimate of the expected prediction error and allows for model optimization and selection. Therefore, the best choice is A.

Having Developed a Statistical Model to Predict Percentage Body Fat