January 2017
Beginner to intermediate
280 pages
217h 11m
English
Control charts for and R do not apply when we are sampling attributes, which are typically classified as defective or nondefective. Measuring defectives involves counting them (e.g., number of bad lightbulbs in a given lot or number of letters or data entry records typed with errors). There are two kinds of attribute control charts: (1) those that measure the percent defective in a sample, called p-charts, and (2) those that count the number of defects, called c-charts.
p-charts are the principal means of controlling attributes. Although attributes that are either good or bad follow the binomial distribution, the normal distribution can be used ...
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