Control Charts for Attributes
Control charts are mainly of two kinds: (1) Control Charts for Variables and (2) Control Charts for Attributes
- A variable is a continuous measurement such as weight, height, length, volume, diameter, and so on. In the previous chapter we discussed the control charts for variables—the x̄ and R control charts. These charts are most widely used in monitoring the quantitative variables.
- In this section, we discuss the charts for monitoring the qualitative variables known as the control charts for attributes. The term attribute refers to those quality characteristics that conform or do not conform to specifications. An attribute is an either-or situation: a product is defective or not. Attributes ...