![]() In males of some mammal species, castration increases life span. Eunuchs were often used as servants and guards in harems in Asia and the Middle East. Is this frequency distribution symmetric or skewed? ĭoes the sample of boys used in this study represent a random sample of British boys? Ī eunuch is a castrated human male. What percentage of boys had no conviction? (round to nearest whole percentage - report as percentage, not as fraction) How many boys had exactly 2 convictions by the end of the study? What is the variable presented in this table? The following table shows the total number of criminal convictions by the boys between the start and end of the study. All of the boys attended six schools located near the research office. A cohort of 395 boys was followed for about 20 years, starting at the age of 8 or 9. The Cambridge Study in Delinquent Development was undertaken in north London (U.K.) to investigate the links between criminal behavior in young men and the socioeconomic factors of their upbringing (Farrington 1994).
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