Game-by-game information for the 1998 season for Mark McGwire and Sammy Sosa. Data are a subset of the dataset provided in Simonoff (1998).
data(homerun)
A data frame containing 5 variables ("gameno", "month", "homeruns", "playerstatus", "player") and 326 observations.
gameno
an integer variable denoting the game number
month
a factor variable taking with levels "March" through "September" denoting the month of the game
homeruns
an integer vector denoting the number of homeruns hit in that game for that player
playerstatus
an integer vector equal to "0" if the player played in the game, and "1" if they did not.
player
an integer vector equal to "0" (McGwire) or "1" (Sosa)
Simonoff, Jeffrey S. 1998. ``Move Over, Roger Maris: Breaking Baseball's Most Famous Record.'' Journal of Statistics Education 6(3). Data used are a subset of the data in the article.