CAPM Practice: Demonstrate an understanding of common problem-solving tools and techniques

A scatter diagram plots pairs of data (in this case, testing hours on one axis and defects found on the other) to explore the relationship between two variables. A positive correlation would suggest that more testing hours reveal more defects.

**Why not B:** A Pareto chart ranks categories by frequency to prioritize improvement efforts using the 80/20 principle. It does not explore the relationship between two continuous variables like testing hours and defects found. Pareto charts show category rankings, not variable correlations.

**Why not C:** A control chart plots data over time to determine if a process is in statistical control. It monitors process stability with control limits, not the relationship between two variables. It would track defects over time, not how defects relate to testing hours.

**Why not D:** An affinity diagram organizes ideas or issues into natural groupings after brainstorming. It is a qualitative organization tool, not a quantitative tool for exploring the statistical relationship between two numerical variables.