In: Statistics and Probability
| 
 Prisoner  | 
 Willing-ness  | 
 Days Served  | 
 (x-xbar)  | 
 (y-ybar)  | 
 (x-xbar)^2  | 
 (y-ybar)^2  | 
 (x-xbar)* (y-ybar)  | 
| 
 Jake  | 
 20  | 
 4  | 
|||||
| 
 Jason  | 
 3  | 
 65  | 
|||||
| 
 Sarah  | 
 10  | 
 20  | 
|||||
| 
 D  | 
 11  | 
 9  | 
|||||
| 
 Dean  | 
 18  | 
 7  | 
|||||
| 
 Joan  | 
 4  | 
 39  | 
|||||
| 
 Sum  | 
|||||||
| 
 Mean  | 
 Variance==>  | 
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| 
 Median  | 
 Standard Deviation=>  | 
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