mistat (version 0.999)

PRED: Soldering Points

Description

1,000 records on variable x and y. x is the number of soldering points on a board, and y is the number of defective soldering points.

Usage

data(PRED)

source

Kenett, R. and Zacks, S. (1998) Modern Industrial Statistics: The Design and Control of Quality and Reliability. Duxbury Press.

Details

Electronic systems such as television sets, radios or computers contain printed circuit boards with electronic components positioned in patterns determined by design engineers. After assembly (either by automatic insertion machines or manually) the components are soldered to the board. In the relatively new Surface Mount Technology minute components are simultaneously positioned and soldered to the boards. The occurrence of defective soldering points impacts the assembly plant productivity and is therefore closely monitored

Examples

data(PRED)

library(boot)

set.seed(123)

YRatioPred <- boot(data=PRED$x, 
                   statistic=function(x,i){
                     mean(x[i[1:100]])*7.495/148.58
                     }, 
                   R=1000)$t

hist(YRatioPred, main="", 
     xlab="", 
     xlim=c(7, 8))