Lacrosse PLL vs. NLL

Difference in means hypothesis tests
Difference in means confidence intervals
The data set looks at both lacrosse leagues, their respective teams, and their shot and goal amounts.

AJ Dykstra, Jack Cowan, and Ivan Ramler


June 22, 2023


This data set examines the goals and shots in two prominent lacrosse leagues: the Premier Lacrosse League (PLL) and the National Lacrosse League (NLL).

The PLL and NLL are highly regarded professional lacrosse leagues that feature top-tier athletes from around the world. The PLL is played in an indoor, smaller field while the NLL plays on an outdoor field with traditional dimensions. This data set allows for an analysis of goal-scoring within these leagues.


The data set has 162 rows with 9 columns. Each row represents a single lacrosse match either in the Premier Lacrosse League or the National Lacrosse League for the 2021 - 2022 season. NLL seasons typically run from December to May while PLL seasons typically run from June to September.

Variable Description
League The Premier Lacrosse league and the National Lacrosse League
Away_team The traveling team
Home_team The hosting team
Away_shots How many shots the Away_team had on net
Home_shots How many shots the Home_team had on net
Away_goals How many goals the Away_team had on net
Home_goals How many goals the Home_team had on net
goals_per_game The total amount of goals scored each game
goals_per_48 The average amount of goals for the first 48 minutes of a game


  1. Do these data provide evidence that, on average, goals scored in the PLL and NLL differ? Include all details of the appropriate hypothesis test.

  2. Construct and interpret a 95% confidence interval in average goals for NLL and PLL lacrosse games per 48 minutes.


Premier Lacrosse League stats. Premier Lacrosse League Stats. (n.d.).

Player stats. NLL. (2023, January 26).