Run Charts
Run Charts
A Run Chart (pronounced: /rʌn tʃɑːrt/) is a graphical tool used in Quality Improvement and Statistics to display observed data in a time sequence. The term is derived from the English words "run", meaning a continuous period of operation, and "chart", meaning a graphical representation of data.
Definition
A Run Chart is a line graph of data plotted over time. By collecting and charting data over time, you can find trends or patterns in the process. It is a simple and effective tool for visualizing process performance over time and identifying process improvement opportunities.
Usage
Run Charts are widely used in healthcare for tracking improvements over time, identifying trends and patterns, and distinguishing between common-cause and special-cause variation. They are often used in conjunction with other statistical tools such as Control Charts and Pareto Charts.
Construction
A Run Chart is constructed by plotting individual observations on the vertical (Y) axis against the time they were observed on the horizontal (X) axis. The data points are then connected by a line to show the data's movement over time.
Related Terms
- Control Charts: A statistical tool used to distinguish between process variation resulting from common causes and variation resulting from special causes.
- Pareto Charts: A type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.
- Quality Improvement: The systematic approach to reduction or elimination of waste, rework, and losses in production process.
External links
- Medical encyclopedia article on Run Charts
- Wikipedia's article - Run Charts
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