Histogram Examples

The histogram example below shows the diameter of piston rings. The values are between the LSL and above the USL. The process capability indices (Cp and Cpk) are greater than 1.6, so the process is capable of meeting customer requirements.

Histogram Example in Excel Piston Rings created by ChartSmartXL

The histogram example below shows wafer strength. As you can see, the data fits between the spec limits. Cp and Cpk are greater than 1.0 but less than1.33 which is the standard for most manufacturing requirements.

Histogram Example Wafer Strength created using ChartSmartXL for Excel

The histogram example below shows another 5 sigma process (Cp and Cpk > 1.66).

Histogram Examples made by ChartSmartXL in Excel

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