achievement {dobson}

Achievement data from table 6.15

Description

Achievement scores after three training methods

Usage

data(achievement)

Format

A tibble with 21 observations and the following 3 variables.

method

training method (A, B or C)

y

achievement scores

x

aptitude scores measured before training commenced

References

Winer, B. J. (1971). Statistical Principles in Experimental Design (2nd ed.).

Examples

data(achievement)
summary(achievement)