mistat (version 1.0-3)

PLACE: Displacements of Electronic Components on Printed Circuit Boards

Description

The observations are the displacements (position errors) of electronic components on printed circuit boards. There are 26 boards. 16 components are placed on each board. Each component has to be placed at a specific location ($x,y$) on a board and with correct orientation $\theta$.

Usage

data(PLACE)

Format

A data frame with 416 observations on the following 4 variables.

crcBrd

Circuit board number, a numeric vector

xDev

Error in placement along the $x$-axis, a numeric vector

yDev

Error in placement along the $y$-axis, a numeric vector

tDev

Error in orientation $\theta$, a numeric vector

Source

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

Examples

data(PLACE)

plot(PLACE[,-1])

boxplot(xDev ~ crcBrd, data=PLACE, 
        ylab="xDev", xlab="crcBrd")

PLACE$code <- factor(c(rep("lDev", 9*16),
                     rep("mDev", 3*16),
                     rep("hDev", 14*16)))
                     
plot(PLACE[,"xDev"], PLACE[,"yDev"],
     pch=as.integer(PLACE[,"code"]),
     main="", xlab="xDev", ylab="yDev")
     
grid()