I was taught that the danger to using ratios is that in order for the ratio to be meaningful, you have to then prove that if you increase the number on the right side of the equation the number of the left will rise proportionally.

e.g.

There were approx 16 million black men in the US (latest census) = 5.8% of the population

There were approx 117 million white men in the US = 36% of the population.

If you look at the ratio there were approx 6.2x as many white men as black men

The latest stats show that approx 2.5x times as many white men are killed by police.

Some people say though that since there are 6.2x as many white men as black men that they are disproportionally affected.

My first problem with doing this kind of ratio math is that 2.5x as many white men dying as black men show REAL VICTIMS, REAL DEAD MEN while look at proportionality is looking at REAL MEN + hypothetical men.

The second problem is that there is no proof that if you US suddenly had a huge influx of black men OR sudden decrease of white men that the number of black men dying from police would increase.

Am I out to lunch here.

What do you guys think?

Would love to hear from someone with a degree in statistical analysis