Definition (Cambridge Dictionary): a count for official purposes, especially one to count the number of people living in a country and to collect information about them [（官方的）统计，人口普查，人口调查]

示例：

We have a census in this country every ten years.

我们每十年做一次全国人口普查。

The census of 1901 is now available to be searched online.

现在可以在网上搜到1901年的统计数据。

Definition (Cambridge Dictionary): a collection of numerical facts or measurements, as about people, business conditions, or weather [统计学，统计数字]

示例：

These statistics are misleading.

这些统计资料会引起误解。

The statistics show that, in general, women live longer than men.

Definition (Cambridge Dictionary): information collected for use [数据、资料]

示例：

They hacked secret data.

他们窃取了保密数据。

Financial/personal/sales data

财务/个人/销售数据