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  #1  
Old 13 August 2013, 08:09 PM
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Teacher Black on white crime

Comment: "Blacks are 39 times more likely to commit a violent crime
against whites then vice versa, and 136 times more likely to commit a
robbery."

Also have seen this as 39/1: "Blacks commit violent crimes against whites at
a 39/1 ratio."

I've googled and it is a very popular statistic that cites FBI databases.
The sources are very complicated and the methods are ambiguously cited. I'm
very curious as to the validity of this claim.
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  #2  
Old 14 August 2013, 12:48 AM
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My impulse is to correct that to "Blacks are 39 times more likely to be charged with/convicted of/incarcerated for a violent crime committed against whites than vice versa."

(But I don't actually have anything to support either statistic.)
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  #3  
Old 14 August 2013, 12:53 AM
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I'm not that great with statistics, so maybe someone who is can look at this: If black people are only around 10% of the population, then wouldn't something like the first part of the OP happen if the criminals/victims were randomly distributed? IOW, a black person selecting a victim at random is very likely to select a white victim, and a white person selecting a victim at random is just as unlikely to select a black victim. Right?
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Old 14 August 2013, 01:01 AM
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Quote:
Originally Posted by erwins View Post
I'm not that great with statistics, so maybe someone who is can look at this: If black people are only around 10% of the population, then wouldn't something like the first part of the OP happen if the criminals/victims were randomly distributed? IOW, a black person selecting a victim at random is very likely to select a white victim, and a white person selecting a victim at random is just as unlikely to select a black victim. Right?
Given a 10% black population, 90% non-black, no other factors and a random selection of victims you would expect that black-on-white would occur nine times more often than black-on-black. "39 times" as high doesn't match the population distributions.
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Old 14 August 2013, 02:51 AM
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Doh! Of course. I was making it more complicated in my head. Thanks.
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  #6  
Old 14 August 2013, 03:35 PM
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Quote:
Violent crime was primarily intraracial for black and white victims (table 14). Sixty-six percent of white victims and 76% of black victims were victimized by an offender of the same race, 1993-98 (when the race of the offender was known).
Violent Victimization
and Race, 1993-98
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Old 14 August 2013, 05:03 PM
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Which is why I find some discussions of "black on black crime" to be disingenuous.
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Old 14 August 2013, 08:40 PM
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Quote:
Originally Posted by Lainie View Post
Which is why I find some discussions of "black on black crime" to be disingenuous.
Why? From the quote a black has a 76% chance of being victimized by another black. If there were no other factors than percent of population a black victim should be victimized by another black just 10% of the time.

I would think though that the observed ratio for black on black is largely driven by co-localization and not by percentage in the population.
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