human: A block design for an experiment in human-computer...

In hassediagrams: Hasse Diagram of the Layout Structure and Restricted Layout Structure

A block design for an experiment in human-computer interaction

Description

This is a block design to compare two methods (mouse and stylus) of drawing a map in a computer file. The design involved 12 subjects randomised in 6 days and 2 tests (morning/afternoon) within each day, across 2 rooms. The design is based on 2x2 Latin squares; see Example 7 Brien and Bailey (2006) for more details.

Usage

data(human)

Format

A data frame of 24 observations on 7 factors The 7 factors included in the design are:

Subject

Categoric factor with levels 1-12.

Day

Categoric factor with levels 1-6.

Room

Categoric factor with levels A and B.

Period

Categoric factor with levels Morning and Afternoon.

Method

Categoric factor with levels Mouse and Stylus.

Sequence

Categoric factor with levels 1 and 2.

Test

Categoric factor with levels 1-24.

Source

Brien, C.J. and Bailey, R.A. (2006). "Multiple randomizations (with discussion)". *Journal of the Royal Statistical Society B*, 68, pp. 571-609.

Examples

data("human")
human

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