The Boston Marathon is the oldest and best-known U.S. marathon. It covers a route from Hopkinton, Massachusetts, to downtown Boston. The distance is approximately 26 miles. Winning times for the...






The Boston Marathon is the oldest and best-known U.S. marathon. It covers a route from Hopkinton, Massachusetts, to downtown Boston. The distance is approximately 26 miles. Winning times for the Boston Marathon are all over 2 hours. The following data are the minutes over 2 hours for the winning male runners.
































































1961-1980
23231819161715221310
181516139201410912
1981-2000
9891014711898
118979910799


(a) Make a stem-and-leaf display for the minutes over 2 hours of the winning times for the years 1961 and 1980. Use two lines per stem. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks. For more details, view How to Split a Stem.)











Minutes Beyond 2 Hours
(1961-1980)



























(b) Make a stem-and-leaf display for the minutes over 2 hours of the winning times for the years 1981 to 2000. Use two lines per stem. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks.)











Minutes Beyond 2 Hours
(1981-2000)



















(c) Compare the two distributions. How many times under 15 minutes are in each distribution?












1961-1980 times
1981-2000 times






Jun 01, 2022
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