Variable (quantitative) control charts are used to monitor measurable characteristics of a process's outputs rather than descriptive characteristics.

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Variable (quantitative) control charts are used to monitor measurable characteristics such as weight, length, height, time, temperature, etc. They are used to track changes in the quality or quantity of the output over time and to detect any variations that may occur in the process. Descriptive characteristics, on the other hand, are used to describe the output, such as color or shape, and are not monitored using control charts.

Variable (Quantitative) Control Charts Are Used to Monitor Measurable Characteristics