Personal computer manufacturer data

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Description

A personal computer manufacturer counts the number of nonconformities per unit on the final assembly line. He collects data on 20 samples of 5 computers each.

Format

A data frame with 10 observations on the following 2 variables.

x

number of nonconformities (inspection units)

sample

sample ID

size

number of computers inspected

References

Montgomery, D.C. (1991) Introduction to Statistical Quality Control, 2nd ed, New York, John Wiley & Sons, pp. 181–182

Examples

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