3.15 ● The U.S. Department of Health and Human Services provided the data in the accompanying table in the report “Births: Preliminary Data for 2007” (National Vital Statistics Reports, March 18, 2009). Entries in the table are the birth rates (births per 1,000 of population)

for the year 2007.

State *Births Alabama 14.0 Alaska 16.2 Arizona 16.2 Arkansas 14.6 California 15.5 Colorado 14.6 Connecticut 11.9 Delaware 14.1 District of Columbia 15.1 Florida 13.1 Georgia 15.9 Hawaii 14.9 Idaho 16.7 Illinois 14.1 Indiana 14.2 Iowa 13.7 Kansas 15.1 Kentucky 14.0 Louisiana 15.4 Maine 10.7 Maryland 13.9 Massachusetts 12.1 Michigan 12.4 Minnesota 14.2 Mississippi 15.9 State *Births Missouri 13.9 Montana 13.0 Nebraska 15.2 Nevada 16.1 New Hampshire 10.8 New Jersey 13.4 New Mexico 15.5 New York 13.1 North Carolina 14.5 North Dakota 13.8 Ohio 13.2 Oklahoma 15.2 Oregon 13.2 Pennsylvania 12.1 Rhode Island 11.7 South Carolina 14.3 South Dakota 15.4 Tennessee 14.1 Texas 17.1 Utah 20.8 Vermont 10.5 Virginia 14.1 Washington 13.8 West Virginia 12.1 Wisconsin 13.0 Wyoming 15.1

*Births per 1000 of population Construct a stem-and-leaf display using stems 10, 11 . . . 20. Comment on the interesting features of the display. (Hint: See Example 3.9.)