lmerTest (version 2.0-33)

TVbo: TV dataset

Description

The TVbo dataset comes from Bang and Olufsen company. The main purpose was to test products, specified by two attributes Picture and TVset. 15 different response variables (characteristics of the product) were assessed by trained panel list.

Usage

TVbo

Format

Assessor

factor: numbering identifying assessors

TVset

factor: attribute of the product

Picture

factor: attribute of the product

15 Characteristics of the product

numeric variables: Coloursaturation, Colourbalance, Noise, Depth, Sharpness, Lightlevel, Contrast, Sharpnessofmovement, Flickeringstationary, Flickeringmovement, Distortion, Dimglasseffect, Cutting, Flossyedges, Elasticeffect

Examples

# NOT RUN {

## import lme4 package and lmerTest package
library(lmerTest)

# }
# NOT RUN {
# }
# NOT RUN {
m <- lmer(Coloursaturation ~ TVset*Picture+
(1|Assessor)+(1|Assessor:TVset), data=TVbo)

step(m, test.effs="TVset", reduce.fixed=FALSE, reduce.random=TRUE)
# }