wires {jocre}

Quality control study of wire connections

Description

Data from a study in quality control assessing the breaking strengths of 20 wire connections between a semiconductor wafer and a terminal post (King 1971).

Usage

data("wires")

Format

A data frame with 20 observations on the following 2 variables.

Strength

A numeric vector giving the strength at which the connection failed.

Failure

A factor with levels b and w specifying whether the bond or wire failed.

Details

The data were taken from Table 4.1 of Nelson (1982).

Source

James R. King (1971) Probability Charts for Decision Making. Industrial Press, New York, NY.

References

Wayne B. Nelson (1982) Applied Life Data Analysis. Wiley, Hoboken, NJ.

Examples

## Not run: 
data(wires)

# Simultaneous 90% confidence regions for the mean and variance
plot(csetMV(wires$Strength, method="mood"), main="Mood")
plot(csetMV(wires$Strength, method="lrt"), main="LRT")

## End(Not run)