palettes: Palette repair data

In fastR: Foundations and Applications of Statistics Using R

Description

The palettes data set contains data from a firm that recycles palettes. Palettes from warehouses are bought, repaired, and resold. (Repairing a palette typically involves replacing one or two boards.) The company has four employees who do the repairs. The employer sampled five days for each employee and recorded the number of palettes repaired.

Format

A data frame with 20 observations on the following 3 variables.

• palettes number of palettes repaired

• employee a factor with levels A B C D

• day a factor with levels day1 day2 day3 day4 day5

Source

Michael Stob, Calvin College

Examples

data(palettes)
# Do the employees differ in the rate at which they repair palettes?
pal.lm1 <- lm(palettes~employee,palettes) 
anova(pal.lm1)
# Now using day as a blocking variable
pal.lm2 <- lm(palettes~employee+day,palettes) 
anova(pal.lm2)
xyplot(palettes~day, data=palettes,
		groups=employee,
		main="Productivity by day and employee",
		type='b',auto.key=list(columns=4,points=FALSE,lines=TRUE))

fastR documentation built on May 1, 2019, 11:18 p.m.