Rosnow {phia}

Rosnow's and Rosenthal's Baseball Performance Data

Description

Contrived data set of an hypothetical study about the efficacy of a new training method for improving the performance of baseball players. 2x2 factorial design with two factors: training method and expertise of the player.

Usage

Rosnow

Format

A data frame with 36 observations and three columns:

method

Training method. Factor with levels control and Ralphing.

experience

Experience of the player in championship competition. Factor with levels no, yes.

hits

Performance scores, measured as total number of hits in an experimentally devised game.

Source

Rosnow, R. L., & Rosenthal, R. (1989). ‘Definition and Interpretation of Interaction Effects’, Psychological Bulletin, 105(1), 143-146.