CompTIA Data+ (DA0-001) — Question 207

A data analyst needs to apply quality control concepts to a data set for accuracy. Which of the following is the best way to do this?

Answer options

• A. Standardization
• B. Parameterization
• C. Encryption
• D. Cross-validation

Correct answer: D

Explanation

Cross-validation is an effective technique for assessing the accuracy of a data set by partitioning it into subsets, training the model on some subsets, and validating it on others. Standardization, parameterization, and encryption do not specifically focus on verifying data accuracy and are used for different purposes in data processing and security.