baseball {EMSaov}

Nested factorial design of Measurement of velocity

Description

There was on a measurement of velocity of a baseball throw in meters per second. Three groups of subjects were involved, two being subjected to special experimental training and the third acting as a control with no special training. Each group has 7 subjects and each subject was given a pretest and posttest.

Usage

data("baseball")

Format

A data frame with 42 observations on the following 4 variables.

velocity

a numeric vector

test

a factor with levels Pre Post

Group

a factor with levels I II III

Subject

a numeric vector

References

Example 11.4 in Fundamental Concepts in the Design of Experiments (3rd ed.) - Charles R. Hicks

Examples

data(baseball)
## maybe str(baseball) ; plot(baseball) ...