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I examined the COMPAS score to possess “Risk of Recidivism” and you may “Chance of Criminal Recidivism

I examined the COMPAS score to possess “Risk of Recidivism” and you may “Chance of Criminal Recidivism

Analysis

We began by the looking at the chance of recidivism get. Our initially analysis examined the simple distribution of the COMPAS ong whites and you can blacks. We plotted the fresh shipping ones score for six,172 defendants who had perhaps not become detained to own yet another crime otherwise who had recidivated in this couple of years.

This type of histograms show that ratings for white defendants was indeed skewed into the lower-exposure kinds, when you find yourself black defendants were equally delivered all over ratings. Within a couple-seasons take to, there were step 3,175 black colored defendants and you may dos,103 light defendants, which have step 1,175 female defendants and you can 4,997 male defendants. There have been dos,809 defendants which recidivated within this couple of years within this try.

The fresh histograms to have COMPAS’s unlawful risk rating and additionally let you know a difference in the rating shipping anywhere between light and you will black defendants. The fresh new decide to try we regularly take to COMPAS’s unlawful recidivism rating is actually a bit smaller compared to into general recidivism get: 4,020 defendants, 1,918 black colored defendants and you can step 1,459 white defendants. There are 652 violent recidivists.

Since there is a very clear difference in the withdrawals off COMPAS scores to own light and black defendants, only taking a look at the distributions cannot make up almost every other market and you will behavioural circumstances. Continue reading I examined the COMPAS score to possess “Risk of Recidivism” and you may “Chance of Criminal Recidivism