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Magazine Chapter 1: Q30E (page 29)
A Pareto diagram is a variation of a histogram forcategorical data resulting from a quality control study.Each category represents a different type of product non-conformity or production problem. The categories areordered so that the one with the largest frequencyappears on the far left, then the category with the secondlargest frequency, and so on. Suppose the following information on nonconformities in circuit packs isobtained: failed component, 126; incorrect component,210; insufficient solder, 67; excess solder, 54; missingcomponent, 131. Construct a Pareto diagram.
Short Answer
Step by step solution
Given information
The frequenciesof occurrence, according to problem categories are provided which helps in designing the Pareto Chart. These four categories are given in the accompanying table:
Category | Frequency |
failed component | 126 |
incorrect component | 210 |
insufficient solder | 67 |
excess solder | 54 |
missingcomponent | 131 |
Construct Pareto Chart of Problem Categories.
Following are the steps to construct a dot-plot of cylinder observations:
- Order all the problem categories from smallest to largest.
- Open Minitab and enter the given data into the worksheet.
- Choose Stat and select 鈥淨uality Tools鈥�. Under quality tools select 鈥淧areto Chart鈥�.
- Double click on C1 category to specify it in defects or attribute data. Similarly, Double click on C2 category to specify it in Frequency.
- All other values remain same and then click 鈥淥k鈥�.
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