Survey: Data collected from targeted groups of people about their opinions, behavior or knowledge. Stratification: A technique that separates data gathered from a variety of sources so that patterns can be seen. Scatter diagram: A diagram that graphs pairs of numerical data, one variable on each axis, to look for a relationship.
Histogram: The most commonly used graph for showing frequency distributions, or how often each different value in a set of data occurs. Usually, design of experiments involves a series of experiments that start by looking broadly at a great many variables and then focus on the few critical ones. Comparing current data to historical control limits leads to conclusions about whether the process variation is consistent (in control) or is unpredictable (out of control, affected by special causes of variation).ĭesign of experiments (DOE): A method for carrying out carefully planned experiments on a process. Use the following tools to collect or analyze data:īox and whisker plot: A tool used to display and analyze multiple sets of variation data on a single graph.Ĭheck sheet: A generic tool that can be adapted for a wide variety of purposes, the check sheet is a structured, prepared form for collecting and analyzing data.Ĭontrol chart: A graph used to study how a process changes over time.
Data Analysis Tools, Charts, and Diagrams Various programs and methodologies have been developed for use in nearly any industry, ranging from manufacturing and quality assurance to research groups and data collection companies. Quality Glossary Definition: Data collection and analysis toolsĭata collection and analysis tools are defined as a series of charts, maps, and diagrams designed to collect, interpret, and present data for a wide range of applications and industries.
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