Attribute charts analyze categorical measurements and can help show you measures of agreement across responses, such as raters. In attribute data, the variable of interest has a finite number of categories. Typically, data has only two possible results, such as pass or fail. You can examine aspects such as how effective raters were at classifying a part, how much they agreed with each other, and how much they agreed with themselves over the course of several ratings.
Tip: This chapter covers only attribute charts. For details about variability charts, see the Variability Gauge Charts section.