### Goalie Stats

This goalie is a professional hockey player. His job is to keep the puck out of the net. Just as a baseball batter keeps track of his home runs, a hockey goalie keeps track of his saves. If the puck is shot toward the net five times in a game and the goalie deflects all five of the shots, that’s a perfect record. Does this mean the goalie is ready for the pros?

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**The Back Story**

- Not necessarily. Five out of five is a perfect record. But what if the opposing team shot the puck toward the net ten times and the goalie still deflected only five of the shots? That’s not a very good record at all.
- How well a goalie does obviously depends not only on how many saves he makes. It also depends on how many goals are attempted by the other team. On the other hand, a really good goalie won’t be able to show how well he can make saves if he doesn’t get many chances.
- So how can you compare one goalie with another? That’s where goalie statistics come in. You can calculate values such as the save percentage and goals against average.
- Watch this video to see how and why these statistics are calculated: http://www.nbclearn.com/nhl/cuecard/56636

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**Can You Apply It?**

With the links below, learn more about goalie statistics in hockey. Then answer the following questions.

- http://proicehockey.about.com/od/learnthegame/f/goalie_stats.htm
- http://statshockey.homestead.com/alltimewins.html

- What is the save percentage in hockey? How is it calculated?
- In one season, a goalie had to defend against a total of 280 shots. He made 252 saves. What was his save percentage?
- What is the goals against average (GAA) statistic in hockey? How is it calculated?
- The same goalie from question 2 played a total of 600 minutes in the season. He allowed 28 goals. What was his goals against average for the season?
- A hockey game is 60 minutes long. How many goals per game, on average, will the goalie in question 4 allow?
- At the second link below, you can find GAAs for the top 100 all-time goalies in hockey. What is the average GAA for the top five goalies? What is the median? What is the mode?
- What is the range of GAA values for the top 100 goalies?