Question

You are given the following statements about different resampling methods: I. Computational time of leave-one-out cross-validation (LOOCV) is less than . k-fold cross-validation II. k-fold cross-validation has higher variance than LOOCV when k < n III. LOOCV tends to overestimate the test error rate in comparison to validation set approach Determine which of the above statements are correct. (Choose one of the option). A. I only B. II only C. III only D. I, II, and III E. None

Answer 1

Answer is option B. (|| only)

LOOCV has lower variance than that of K-fold CV. When k<N.