This is particularly true for drug offences and acquisitive crime. The biases of the police and the ordinary public are accordingly reviewed with their reasons in this regard.
Household crimes - For household offences, all members of the household can be regarded as victims, so the respondent answers on behalf of the whole household. The offence categories concerned are: bicycle theft; burglary; theft in a dwelling; other household theft; thefts of and from vehicles, and vandalism to household property and vehicles.
Personal crimes - For personal offences, the respondent reports only on his/her experience to the BCS. This applies to the following offence categories: assault, sexual offences, robbery, theft from the person, and other personal theft. Information is also collected on threats.
Sampling error - A sample is a small-scale representation of the population from which it is drawn. As such, the sample may produce estimates which differ from the figures which would have been obtained if the whole population had been interviewed.
Statistical significance/Weighted data - Raw ...