In 2011, the 20 percent of families with the lowest incomes paid an effective average federal tax rate (on all federal taxes) of about , whereas the 20 percent of families with the highest incomes paid an effective average tax rate of about .

Question

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In 2011, the lowest 20 percent of families paid an effective average federal tax rate of about 1.9 percent, while the highest 20 percent paid about 23.4 percent.

In 2011, the 20 Percent of Families with the Lowest