In comparison to the number of families with children that were headed by single women in the 1970, the number headed by single women in 2010 was:

Question

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According to data from the U.S. Census Bureau, the number of families headed by single women increased from 3.4 million in 1970 to 8.6 million in 2010. This is a substantial increase, indicating that the number of families headed by single women in 2010 was substantially more than in 1970.

In Comparison to the Number of Families with Children That