翻译并分析这两句话
来自一篇文章,我没读懂
Poverty,intheNLSYsample,iseighttimesmorecommonamongwhitesfrompoorbackgroundsthanamongthosewhogrewupinprivilege--yetitis15timesmorecommonatthelowendoftheIQspectrum.
Illegitimacyistwiceascommonamongthedullest(IQunder75)asitisamongthebrightest(IQover125).
帮忙分析一下,谢谢
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