The following table lists the number (in thousands) of violent crimes and property crimes committed annually in 1985 to 2006 (the last year data were available).

a. Draw a chart that displays both sets of data.

b. Does it appear that crime rates are decreasing? Explain.

c. Is there another variable that should be included to show the trends in crimerates?

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Year Violent crimes Property crimes 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 1,328 1,489 1,484 1,566 1,646 1,820 1,912 1,932 1,926 1,858 1,799 1,689 1,636 1,534 1,426 1,425 1,439 1,424 1,384 1,360 1,391 1,418 11,103 11,723 12,025 12,357 12,605 12,655 12,961 12,506 12,219 12,132 12,064 11,805 11,558 10,952 10,208 10,183 10,437 10,455 10,443 10,319 10,175 9,984