TVbo {lmerTest} | R Documentation

## 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

### Source

Bang and Olufsen company

### Examples

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

    ## 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)

    ## End(Not run)

[Package lmerTest version 2.0-33 Index]