The team earned-run averages for the American and National League baseball teams in 2009 are shown below. Calculate the median, mean, and standard deviation for each league individually and for Major League Baseball as a whole.
American League Team | ERA | National League Team | ERA |
Seattle Mariners | 3.87 | Los Angeles Dodgers | 3.41 |
Chicago White Sox | 4.14 | San Francisco Giants | 3.55 |
Oakland Athletics | 4.26 | Atlanta Braves | 3.57 |
New York Yankees | 4.26 | St Louis Cardinals | 3.66 |
Detroit Tigers | 4.29 | Chicago Cubs | 3.84 |
Tampa Bay Rays | 4.33 | Philadelphia Phillies | 4.16 |
Boston Red Sox | 4.35 | Cincinnati Reds | 4.18 |
Texas Rangers | 4.38 | Colorado Rockies | 4.22 |
Los Angeles Angels | 4.45 | Florida Marlins | 4.29 |
Toronto Blue Jays | 4.47 | San Diego Padres | 4.37 |
Minnesota Twins | 4.50 | Arizona Diamondbacks | 4.42 |
Kansas City Royals | 4.83 | New York Mets | 4.45 |
Cleveland Indians | 5.06 | Houston Astros | 4.54 |
Baltimore Orioles | 5.15 | Pittsburgh Pirates | 4.59 |
|
| Milwaukee Brewers | 4.83 |
|
| Washington Nationals | 5.00 |
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