The document discusses 3 types of criminal statistics that provide information on ethnicity and crime: 1) Official crime statistics which may be unreliable as only 10% of crimes are discovered by police with 90% reported by the public. 2) Victim surveys which reveal the majority of crime is intra-ethnic (within ethnic groups) but may be unrepresentative by excluding under 16s and business/white collar crimes. 3) Self-report studies which found similar rates of offending across ethnicities but have limitations such as potential lying and not covering more serious crimes. The conclusion is that evidence on crime and ethnicity is inconsistent.