8  Seven Tools Analysis

8.1 Introduction to the Seven Tools

8.1.1 Check Sheets for Data Collection

8.1.2 Histograms for Data Distribution

8.1.3 Pareto Charts for Prioritization

8.1.4 Cause-and-Effect (Ishikawa) Diagrams

8.1.5 Scatter Plots for Relationship Analysis

8.1.6 Control Charts for Process Monitoring

8.1.7 Flowcharts for Process Visualization

8.2 Applying the Tools in Surveys & Sampling

8.3 Real-World Case Studies