TOTAL QUALITY MANAGEMENT TOOLS OF TQM (2) Abdulla Jassim Abdulla
The Seven Tools oF TQM Flowcharts Cause and effect Diagram (Ishikawa) Check sheets Pareto Charts Histograms Run Charts and Control charts Scatterplots and correlation Analysis
Pareto Charts Named after Wilfredo Pareto. Prioritize problems Categorical Data
Histograms Process Variability Continuous Data Factors important when investigating Histograms: Variations Location Shape Unusual features
Bar charts Graphical summary of data Display group differences Ordinal data
Unusual Features in Histograms Bimodal histograms Cut-off Distribution Combed Distribution
Summary Statistics Mean Median Standard Deviations Variance
Run Charts Variation (Trends) over time. Data Could be Means, counts or proportions collected over time.