About 20% of Americans, or the bottom quintile, fall into this group.

大约 20% 的美国人，即最底层的五分之一，属于这一群体。

For the bottom quintile, average household wealth levels are negative.

对于底层的五分之一，平均家庭财富水平为负。

These are what social scientists call quintiles.

这些就是社会科学家所说的五分位数。

The households in the top quintile earn about 50% of all the income in the United States.

收入最高的五分之一家庭的收入约占美国总收入的 50%。

Well, the top quintile’s household income was about twice the median income.

嗯，最高五分之一的家庭收入大约是收入中位数的两倍。

Now, the simple fact that these quintiles have different incomes tells us that we don’t have a perfectly equal society.

现在，这些五分之一人群收入不同的简单事实告诉我们，我们没有一个完全平等的社会。

As of 2015, households in the US that make less than $22,800 a year are the bottom quintile of the income distribution.

截至 2015 年，年收入低于 22,800 美元的美国家庭处于收入分配的最低五分之一。

Only 10% of those born at the bottom end up in the top quintile as adults.

出生在底层的人中，只有 10% 的人成年后最终跻身顶层五分之一。

Wrong. The average net worth for those in the top quintile is 9 times that of the median – $630,000.

错误的。最高五分之一人群的平均净资产是中位数的 9 倍——630,000 美元。

So we’ve got an average net worth of about negative $6,000 for the bottom quintile and a median household wealth level of about $68,000.

因此，底层五分之一的平均净资产约为负 6,000 美元，家庭财富中位数约为 68,000 美元。