CompTIA Data+ (DA0-001) — Question 365

Which of the following statistical methods would be best for an analyst to use to determine if two nominal variables are unrelated?

Answer options

• A. Chi-squared
• B. Z-score
• C. p-value
• D. f-test

Correct answer: A

Explanation

The Chi-squared test is specifically designed to evaluate the association between two nominal variables, making it the most suitable choice. In contrast, the Z-score is used for standard deviations in normal distributions, the p-value is a measure of significance rather than a statistical method, and the f-test is employed for comparing variances, not for nominal variables.