2011 Census Microdata Sample of Anonymised Records Teaching File

#Background

The main population base for published statistical tables from the 2011 Census in Northern Ireland is the usual resident population base as at Census day, 27 March 2011. By way of background, for 2011 Census purposes a usual resident of the United Kingdom (UK) is anyone who, on Census day, was in the UK and had stayed or intended to stay in the UK for a period of 12 months or more, or had a permanent UK address and was outside the UK and had intended to be outside the UK for less than 12 months.

Against this background, the 2011 Census Microdata Sample of Anonymised Records (SARs) Teaching File comprises a sample of 19,862 records (approximately 1 per cent) relating to people who were usually resident in Northern Ireland at the time of the 2011 Census. For each individual, information is available for seventeen separate characteristics (for example, sex, age, marital status) to varying degrees of detail. Both the size of the sample and the content of the records in the file have been harmonised, wherever possible, with the equivalent SARs teaching file that the Office for National Statistics simultaneously released for England and Wales.

#Purpose

The primary purpose of the teaching file, which comprises unit-record level data as opposed to statistical aggregates, is as an educational tool aimed at:

+ encouraging wider use of Census data by facilitating another way of examining Census data, for example through the building of statistical models, over and above that already available through the raft of standard tabular output released to date;
+ providing a broad insight into the sort of detail that is generally included in a SARs product, along with data formats and any associated metadata. This will enable users (arguably those less experienced at using SARs products) to ‘play’ with the data and increase their knowledge and skills in readiness for accessing the more detailed SARs products that are planned and will be available in, for example, a safe setting; and
+ assisting with the teaching of statistics and geography at GCSE and higher levels.

## 背景
本数据集的统计表格发布基于2011年北爱尔兰人口普查的主要人口基础，即截至普查日（2011年3月27日）的常住居民人口。在此背景下，对于2011年人口普查而言，英国（UK）的常住居民是指在普查日身处英国，且在12个月或更长时间内停留或计划停留英国，或拥有永久英国地址、身处英国境外且计划在英国境外停留少于12个月的人。
在此基础上，2011年北爱尔兰人口普查匿名记录样本（SARs）教学文件包含了19,862条记录的样本（约占1%），这些记录涉及在2011年普查时通常居住在北爱尔兰的人群。对于每一位个体，均可获得关于十七个不同特征（例如，性别、年龄、婚姻状况）的信息，其详略程度各异。尽可能地对样本规模和文件中记录的内容进行了协调，以与国家统计局同时发布的英格兰和威尔士等价的SARs教学文件保持一致。

## 目的
教学文件的主要目的是作为一个教育工具，包含单元记录层面的数据，而非统计汇总数据，旨在以下方面发挥效用：
+ 通过提供另一种审视普查数据的方式，例如通过构建统计模型等，鼓励更广泛地使用普查数据，超越迄今为止已发布的标准表格输出的范畴；
+ 提供对SARs产品通常包含的详细信息的广泛洞察，包括数据格式和任何相关的元数据。这将使用户（特别是那些在使用SARs产品方面经验较少的用户）能够对数据进行操作，并增强其知识技能，以便于获取计划中并提供的安全环境下更为详细的数据产品；
+ 协助GCSE及更高层次上的统计学和地理学的教学。