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

A scatter diagram plots pairs of numerical data on X and Y axes to visually explore whether a relationship exists between two variables. A positive or negative correlation pattern in the data suggests a relationship that can be investigated further.

**Why not A:** Determining if a process is within statistical control limits is the purpose of a control chart, which plots data over time with upper and lower control limits. Scatter diagrams explore relationships between two variables but do not include control limits.

**Why not B:** Prioritizing defects by frequency of occurrence is the purpose of a Pareto chart, which ranks categories to identify the most significant contributors. Scatter diagrams show the relationship between two variables, not the ranking of individual categories.

**Why not C:** Showing the distribution of defects across project phases could be done with a histogram or bar chart. Scatter diagrams plot paired data points to reveal correlations, not to display distribution across categories or phases.