solder | R Documentation |
ATT ran an experiment varying five factors relevant to a wave-soldering procedure for mounting components on printed circuit boards. The response variable, skips, is a count of how many solder skips appeared to a visual inspection.
A data frame with 900 observations on the following 6 variables.
a factor with levels L
M
S
a factor with levels Thick
Thin
a factor with levels A1.5
A3
A6
B3
B6
a factor with levels
D4
D6
D7
L4
L6
L7
L8
L9
W4
W9
a numeric vector
count of how many solder skips appeared to a visual inspection
Comizzoli, R. B., J. M. Landwehr, and J. D. Sinclair (1990). Robust materials and processes: Key to reliability. AT&T Technical Journal 69(6), 113-128.
data(solder) ## maybe str(solder) ; plot(solder) ...
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