12. In 1992 in the United States, the median family income was $38 909 for white families. $21.161 for black families, and $23.901 for Hispanic families (C.S Bureau of the Census. Current Population Reports. P-60-184) In constant 1992 dollars, the median family in- comes in 1975 were $35.619 for white families, $21,916 for black families, and $23,844 for Hispanic families Interpret the medians in 1992 and the changes in their values be- tween 1975 and 1992.