EMC Proven Professional – Data Science and Big Data Analytics — Question 1

You are using MADlib for Linear Regression analysis. Which value does the statement return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;

Answer options

• A. Goodness of fit
• B. Coefficients
• C. Standard error
• D. P-value

Correct answer: A

Explanation

The correct answer is A, as the r2 value represents the goodness of fit for the regression model, indicating how well the independent variables explain the variation in the dependent variable. The other options—coefficients, standard error, and p-value—are different metrics associated with regression analysis, but they do not correspond to the r2 value.