Table 4.4:
Table 4
Calculation table for the correlation coefficient
City
Boston
30
50
−10
100
−14
196
140
Chicago
35
55
−5
25
−9
81
45
Philadelphia
40
70
0
0
6
36
0
Washington, DC
45
65
5
25
1
1
5
Dallas
50
80
10
100
16
256
160