KEYBOARDS: New Designs of Feyboards for Desktop Computers

Description Usage Format Source Examples

Description

The design of the keyboard might have effect on the speed of typing or on the number of typing errors. Noisy factors are typist or type of job. Letters A, B, C, D of variable keyboard denote the designs.

Usage

1

Format

A data frame with 25 observations on the following 4 variables.

typist

The typist, a factor with levels 1 2 3 4 5

job

The type of job, a factor with levels 1 2 3 4 5

keyboard

Keyboard design, a factor with levels A B C D E

errors

Number of typing errors, a numeric vector

Source

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

Examples

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data(KEYBOARDS)

boxplot(errors ~ keyboard, data=KEYBOARDS, ylab="Errors")

mistat documentation built on April 18, 2021, 5:07 p.m.