You discover that the years of marriage before a divorce for nine whites and nine nonwhites are as follows:Whites 12,1,8,9,10,17,3,6,6 Non-Whites 1,9,15,18,11,13,14,7,3

Which statement about this data is true?
A)There is no difference in the range for the two groups.
B)The median years of marriage prior to divorce is three years longer for whites than nonwhites.
C)The mean years of marriage prior to divorce are the same for both groups.
D)On average,nonwhites stay married longer prior to divorce than whites.
E)The mode for the two groups is the same.

Question

You discover that the years of marriage before a divorce for nine whites and nine nonwhites are as follows:Whites 12,1,8,9,10,17,3,6,6 Non-Whites 1,9,15,18,11,13,14,7,3
 
Which statement about this data is true?
A)There is no difference in the range for the two groups.
B)The median years of marriage prior to divorce is three years longer for whites than nonwhites.
C)The mean years of marriage prior to divorce are the same for both groups.
D)On average,nonwhites stay married longer prior to divorce than whites.
E)The mode for the two groups is the same.

Quizplus · Accepted Answer

To compare the average years of marriage prior to divorce, we need to find the mean for both groups. For whites, the mean is (12+1+8+9+10+17+3+6+6)/9 = 8.33 years. For non-whites, the mean is (1+9+15+18+11+13+14+7+3)/9 = 11.11 years. Therefore, on average, non-whites stay married longer prior to divorce than whites.

You Discover That the Years of Marriage Before a Divorce