Quantitative data collected by the government, e.g. births, deaths, crime
Source of secondary data
Hard stats
Objective, politicians can't change them, e.g. births and marriages
Soft stats
Subjective and politicians can change them, e.g. stats on poverty, crime and employment
Examples of official stats
UK Census - survey of every household carried out every 10 years
TV ratings
Strengths of official stats
Cheap and easy to access large amounts of data
Reliable, can explore changes over time
Weaknesses on official stats
Lack validity, government may present stats in a biased way, manipulate to make their politics more favourable, e.g. crime stats may say more about policing than actual crime factors
Definitions and the way data is collected may vary, impossible to compare data, definition of unemploymentchanges