Statistics for 21 National Hockey League teams were obtained from the Hockey Encyclopedia and are shown in Table 12-8.
The variables and definitions are as follows:
Wins Number of games won in a season.
Pts Points awarded in a season. Two points for winning a game, one point for
losing in overtime, zero points for losing in regular time.
GF Goals for Total goals scored during the season.
GA Goals against Goals scored against the team during the season. PPG Power play goals Points scored while on power play.
PPcT Power play percentage the number of power play goals divided
by the number of power play opportunities.
SHG Short-handed goals scored during the season.
PPGA Power play goals against
PKPcT Penalty killing percentage Measures a team’s ability to prevent goals
while its opponent is on a power play. Opponent power play goals
divided by opponent’s opportunities.
SHGA Short-handed goals against Fit a multiple linear regression model relating wins to the other variables. Estimate σ2 and find the standard errors of the regression coefficients.