SAS Statistical Business Analysis Using SAS 9: Regression and Modeling — Question 23

When working with smaller data sets (N<200), which method is preferred to perform honest assessment?

Answer options

• A. Training: 40% Validation: 30% Testing: 30%
• B. K-fold cross validation
• C. Cross validation using 4 quartile observations
• D. Use the AIC goodness of fit statistic

Correct answer: C

Explanation

Option C is the correct answer as it utilizes quartile observations, which is suitable for smaller data sets by ensuring that all parts of the data are represented in the assessment. Options A and B are less effective for small datasets since they may not provide a reliable evaluation, while Option D focuses on model fitting rather than the assessment method.