Is there a relationship between the race of violent offenders and their victims? Data from

the US Department of Justice (2003) are presented in table 12.6.

Characteristics of Victim

White

Black

Other

White

3000

483

58

Black

227

2852

11

Other

51

28

109

a.

Let's treat race of offenders as the independent variable and race of victims as he

dependent variable. If we first ignore the ind. Variable and try to predict the race of

the victim, how many errors will we make?

b.

If we now take into account the independent variable, how many errors of

prediction will we make for those offenders who are white? Black offenders? Other

offenders?

c.

Combine the answers in (a) and (b) to calculate the proportional reduction in error

for this table based on the ind. Variable. How does this statistic improve our

understanding of the relationship between the two variables? I found this on the site but there is no work done step by step that shows how to work through it