Stoplight Charts (With SPC Inside)

Abstract:Many balanced scorecards use stoplight charts to track defects. Colors for the chart are set by comparing current results with target thresholds. Software that automates the process results in an operation that is quick and efficient, but which may be potentially misleading if incorrectly interpreted. Control charts and other quality tools are needed to assure the system is long-term stable. It may take time to determine if a trend is significant, but the method pays off by avoiding false declarations of improvement or adverse trends. Use of stoplight charts offers a quick executive summary of performance and highlights areas calling for immediate …

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