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Baseball Judgments

Baseball Judgments | SportsLibrary.net
The change in the field of MLB ballparks

 

By Roger Weber

 

This, by year, is a list of the average and standard deviation statistics for the overall field of Major League ballparks. For example, in 1904, the average age of MLB parks was 7.06 years, and the standard deviation in ballpark ages was just under 7 years.

 

Year

1901

1902

1903

1904

1905

1906

1907

1908

1909

1910

Average

5.375

5.1875

6.0625

7.0625

8.0625

9.0625

10.063

11.063

10.438

10.313

St. dev.

7.3473

6.8529

6.9519

6.9519

6.9519

6.9519

6.9519

6.9519

7.8398

8.7614

 

 

 

 

 

 

 

 

 

 

 

Year

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

Average

9.4375

8.4375

7.875

8.875

7.4375

7.1875

8.1875

9.1875

10.188

9.5

St. dev.

9.2157

10.119

10.468

10.468

7.2935

6.483

6.483

6.483

6.483

5.5377

 

 

 

 

 

 

 

 

 

 

 

Year

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

Average

10.5

11.5

11.875

12.875

13.875

14.875

15.875

16.875

17.875

18.875

St. dev.

5.5377

5.5377

6.3443

6.3443

6.3443

6.3443

6.3443

6.3443

6.3443

6.3443

 

 

 

 

 

 

 

 

 

 

 

Year

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

Average

19.875

19.5

20.5

21.5

22.5

23.5

24.5

22.813

23.813

24.813

St. dev.

6.3443

8.1976

8.1976

8.1976

8.1976

8.1976

8.1976

9.0791

9.0791

9.0791

 

 

 

 

 

 

 

 

 

 

 

Year

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

Average

25.813

26.813

27.813

28.813

29.813

30.813

31.813

32.813

33.813

34.813

St. dev.

9.0791

9.0791

9.0791

9.0791

9.0791

9.0791

9.0791

9.0791

9.0791

9.0791

 

 

 

 

 

 

 

 

 

 

 

Year

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

Average

35.813

36.813

35.438

33.188

33.313

34.313

35.313

34.438

35.438

34.625

St. dev.

9.0791

9.0791

13.105

15.259

14.934

14.934

14.934

14.578

14.578

17.142

 

 

 

 

 

 

 

 

 

 

 

Year

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

Average

31.667

27.4

28.4

26.75

27.6

25.45

26.45

25.2

23.833

20.583

St. dev.

19.799

22.165

22.165

22.363

22.547

23.801

23.801

24.178

24.068

22.027

 

 

 

 

 

 

 

 

 

 

 

Year

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

Average

20.208

20.792

19.708

19

20

20.5

19.577

20.577

21.577

22.577

St. dev.

22.312

22.622

22.209

21.338

21.338

21.696

21.81

21.81

21.81

21.81

 

 

 

 

 

 

 

 

 

 

 

Year

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

Average

23.577

23.769

24.769

25.769

26.769

27.769

28.769

29.769

30.308

31.308

St. dev.

21.81

22.331

22.331

22.331

22.331

22.331

22.331

22.331

22.852

22.852

 

 

 

 

 

 

 

 

 

 

 

Year

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

Average

29.192

28.731

29.429

27.429

26.75

27.75

26.536

25.7

25.933

21.5

St. dev.

21.425

22.155

21.997

22.441

22.756

22.756

23.95

24.142

24.624

22.674

 

 

 

 

 

 

 

 

 

 

 

Year

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Average

19.833

20.833

20.733

19.4

20.9

20.567

21.567

22.567

20.967

21.033

St. dev.

22.719

22.719

22.957

23.271

23.599

23.671

23.671

23.671

23.932

24.232

 

 

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