Using the same sample data just discussed above, the following illustrates the difference in cardinality estimates with and without the use of statistical view for the query.

下面使用以上讨论的相同的示例数据，阐释在使用和不使用查询的统计视图的情况下基数估计的差别。

youdao

Just under 7% of all American homeowners had this "negative equity" at the end of December 2006 estimates Mr Cagan, using a sample of 32m houses (see chart 1).

Cagan用一个3200万房屋的样本估计：到2006年12月底，不到7%的全美房主拥有这种“负资产物业”(见图一)。

youdao

But following the ADP report, which is based on a sample derived from roughly 24 million employees, some economists upgraded their estimates.

但根据ADP的报告，一些经济学家已经上调了预期。ADP的报告是根据从约2,400万名就业人员中抽取的样本得出的。

youdao

Q. estimates based on a representative sample of schoolchildren with Japanese estimates based on an upper-income, heavily urban sample.

NEWYORKER: None of the Above

It is also strangely stable: most banks in the sample changed their LIBOR estimates fewer than 30 times, even though they could have done so 182 times.

ECONOMIST: Reforming LIBOR

If the sample is too small or is not random, then estimates regarding the number of responsive documents contained within the population could be wildly inaccurate.

FORBES: Guest Post by Matthew Nelson