According to the US Department of justice, from 2003 to 2009, there were 2932 deaths related to to police arrest. Of there deaths, 41.7% were white and 31.7% were black. If the US population of approximately 322 million is approximately 63% white and 13% black, are black people disproportionately likely to be killed by police? are more black people than white people killed by police?
Deaths of white by police = 2932*41.7% = 1222.64
Deaths of black by police = 2932*31.7% = 929.44
Fraction of white people died due to police = 1222.64/(63%*322000000) = 6.03*10^-6
Fraction of black people died due to police = 929.44/(13%*322000000) = 2.2*10^-5
Therefore No. of Black People killed as a fraction of black population = (2.2*10^-5)/(6.03*10^-6) = 3.65 times the no. of black people killed as a fraction of their(white) population
So, yes on an average black people are killed 3 times more as compared to white people by police.
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