Free Practice Test Prep GMAT-Data-Insights Exam Questions 2025

When calculating the productivity impact of workplace training, which formula best captures the return on investment? (difficulty: hard)

When performing stepwise regression for variable selection, what is the primary limitation that needs to be considered? (difficulty: hard)

A competitive analysis graph shows that when the intensity of rivalry in an industry increased by 25%, the average industry profitability decreased by only 5%. What does this suggest about the industry's structural characteristics? (difficulty: hard)

A new product's first-month data shows a 40% trial rate, 15% conversion rate, and 8% churn rate. What can be concluded about the product's market fit from these metrics? (difficulty: medium)

In decision tree analysis, which of the following metrics is most appropriate for evaluating the quality of a split when dealing with continuous target variables? (difficulty: medium)