Data from 2007 measured the Incarceration Rate (i.e. number of people in prison per 100,000) for 200+ countries around the world. This measured both the incarceration rate Pre-trial (held pending trial) and the rate of people in prison after trial (the US has the highest post-trial rate of any country - 787 per 100,000). The fitted line plot belowses regression to calculate the prison rate after trial based on the pre-trial rate. Fitted Line Plot Prison_rate= 64 + 2.1 Pretrial_rate 800 • USA 700 600 Russia 500 400 300 200 Prison_rate S R-Sq 96.6350 41.4% ● 000 .. ●

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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What percent of the variability in Post-Trial Prison Rates is explained by Pre-Trial Rates?   Round your answer to two decimal places and express as a percent (i.e. a number between 0 and 100).

Data from 2007 measured the Incarceration Rate (i.e. number of people in prison
per 100,000) for 200+ countries around the world. This measured both the
incarceration rate Pre-trial (held pending trial) and the rate of people in prison after
trial (the US has the highest post-trial rate of any country - 787 per 100,000). The
fitted line plot belowses regression to calculate the prison rate after trial based on
the pre-trial rate.
Fitted Line Plot
Prison_rate= 64 + 2.1 Pretrial_rate
800
• USA
700
600
Russia
500
400
300
200
100
0
Prison_rate
S
R-Sq
0
96.6350
41.4%
●
50
000
..
100
Pretrial_rate
150
●
200
Transcribed Image Text:Data from 2007 measured the Incarceration Rate (i.e. number of people in prison per 100,000) for 200+ countries around the world. This measured both the incarceration rate Pre-trial (held pending trial) and the rate of people in prison after trial (the US has the highest post-trial rate of any country - 787 per 100,000). The fitted line plot belowses regression to calculate the prison rate after trial based on the pre-trial rate. Fitted Line Plot Prison_rate= 64 + 2.1 Pretrial_rate 800 • USA 700 600 Russia 500 400 300 200 100 0 Prison_rate S R-Sq 0 96.6350 41.4% ● 50 000 .. 100 Pretrial_rate 150 ● 200
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