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

Control charts plot process data over time with upper and lower control limits. They allow teams to distinguish between normal process variation (common causes) and unusual variation (special causes) that requires investigation and action.

**Why not B:** A scatter diagram plots pairs of numerical data to explore the relationship between two variables. It does not track data over time or determine if a process is in statistical control. Scatter diagrams show correlation, not process stability.

**Why not C:** A Pareto chart ranks defect categories by frequency to prioritize improvement efforts using the 80/20 principle. While useful for quality management, it does not plot data over time or include control limits for statistical process control.

**Why not D:** A histogram shows the distribution and frequency of data within ranges but does not display data points over time. It reveals the shape of data distribution (such as normal or skewed) but cannot indicate whether a process is in or out of statistical control.