Your data [1] shows that the number of black males imprisoned per 100,000 residents is 2,203 and it shows that the number of white males imprisoned per 100,000 residents is 385. The former is greater than the latter, in accordance with the quote.

For more data, we can also look at just the Federal Bureau of Prisons [2] and we see that 38.2% of inmates are black while 57.8% of inmates are white despite the fact that only 16.1% of the US population is black while 75.7% of the US population is white.

As far as your comment on age groups, you're just going to have to re-read it until you understand what it's saying.

1. https://www.statista.com/statistics/252871/imprisonment-rate...

2. https://www.bop.gov/about/statistics/statistics_inmate_race....