Cause and Effect Diagrams
Scatter Diagrams
Graph and Control (Run) Charts
Histograms
Pareto Charts
Check Sheets
Stratification
According to (Richard F. Gerson, Ph. D.) the above listed tools are the seven "basic" tools for measuring quality. Baderman Island can make use of Cause & Effect Diagrams for determining all possible causes for a certain effect and as a first step in problem solving through a well thought out list of possible causes. The Cause and Effect diagram looks like the skeleton of a fish and is also referred to as the fishbone diagram. The fishbone diagram could be used with the products and also a service provided. The Scatter Diagram will be done by a graph which will include two quantitative variables of a multidimensional data set and displaying the data by collection of points with each on a horizontal and vertical axis. The Scatter Diagram will help search for root causes of the identified problem. According to (Six Sigma) a scatter diagram the pattern of intersecting points can show relationship patterns and is used often to approve or disapprove cause-and-effect relationships. The Graph and Control (Run) Charts will display data in a time sequence and show the performance of a business process. This chart will also show a visual form of different sizes of numerical quantities. The Graph and Control (Run) Charts statistically determines upper and lower limits and is a collection of data points plotted on a graph according to time. The Histograms is a vertical bar graph that will show numerical information and frequency of distribution of continuous data and will allow for a range of data. The Histogram also will show the deviations from the norm and can
References: Richard F. Gerson, Ph. D. "Measuring Customer Satisfaction", Crisp Publications, 1993 Lanham, MD Six Sigma. Scatter Diagram. Retrieved April 15, 2007, from http://www.isixsigma.com/tt/scatter_diagram/