Which graphical tool is used to depict relationships between two variables, often showing how one variable changes with another?

Which graphical tool is used to depict relationships between two variables, often showing how one variable changes with another?

• A. Run Chart
• B. Histogram
• C. Pareto Chart
• D. Scatter Diagram

Answer: (D)

Exploring how two quantitative variables relate to each other is what this item is about. A scatter diagram plots each observation as a point with coordinates from the two variables, so you can see patterns: an upward trend suggests a positive relationship, a downward trend a negative one, and a random scatter implies little or no relationship. This visualization helps assess correlation, identify clusters or outliers, and guide further analysis or modeling. It differs from the other charts: a run chart tracks a metric over time, a histogram shows the distribution of a single variable, and a Pareto chart emphasizes frequencies of categories. When the goal is to depict how one variable changes with another, the scatter diagram is the right choice.

Exploring how two quantitative variables relate to each other is what this item is about. A scatter diagram plots each observation as a point with coordinates from the two variables, so you can see patterns: an upward trend suggests a positive relationship, a downward trend a negative one, and a random scatter implies little or no relationship. This visualization helps assess correlation, identify clusters or outliers, and guide further analysis or modeling. It differs from the other charts: a run chart tracks a metric over time, a histogram shows the distribution of a single variable, and a Pareto chart emphasizes frequencies of categories. When the goal is to depict how one variable changes with another, the scatter diagram is the right choice.