Table 6E.3 shows the number of earthquakes per year of magnitude 7.0 and higher since 1900 (source: Earthquake Data Base System of the U.S. Geological Survey, National Earthquake Information Center, Golden, Colorado). Construct and interpret either a digidot plot or a separate stemand - leaf and time series plot of these data.

Table 6E.3

Transcribed Image Text:

13 1928 22 1956 15 1900 1984 1901 1929 1957 34 1985 15 14 19 1958 1902 1930 13 10 1986 6. 1987 1903 10 1931 26 1959 15 11 1904 1960 1988 16 1932 13 22 1933 1961 1989 1905 26 14 18 1906 1934 1962 32 22 15 1990 18 1907 27 1935 24 1963 20 1991 16 1936 1992 1908 18 21 1964 15 13 1909 32 1937 22 1965 1993 22 12 36 1938 26 1994 13 1910 1966 19 1911 1967 24 1939 21 1995 20 16 1996 1912 22 1940 23 1968 30 15 1913 23 1941 24 1969 27 1997 16 1942 1970 1998 1914 22 27 29 12 1915 1943 1971 23 1999 18 41 18 1972 1916 25 1944 31 20 2000 15 1917 21 1945 27 1973 16 2001 16 1946 1974 2002 1918 21 35 21 13 1919 1975 2003 14 1947 26 21 15 1920 1948 28 1976 25 2004 16 1921 1977 11 1949 36 16 2005 11 1922 1950 39 1978 2006 14 18 11 1923 23 1951 21 1979 15 2007 18 1924 18 1952 17 1980 18 2008 12 1925 1953 17 22 1981 14 2009 15 1926 1954 19 17 1982 10 1927 20 1955 19 1983 15