|
Square footage (thousands) |
Price of house thousands |
Rank(X) |
Rank(Y) |
Difference, d |
d² |
|
2.7 |
478 |
2 |
3 |
-1 |
1 |
|
2.3 |
328 |
5 |
24.5 |
-19.5 |
380.25 |
|
2.3 |
309 |
5 |
27 |
-22 |
484 |
|
1.8 |
298 |
16.5 |
30 |
-13.5 |
182.25 |
|
1.9 |
303 |
13 |
29 |
-16 |
256 |
|
2.1 |
466 |
10 |
5 |
5 |
25 |
|
1.4 |
328 |
23 |
24.5 |
-1.5 |
2.25 |
|
1.6 |
385 |
20 |
17 |
3 |
9 |
|
2.1 |
360 |
10 |
20 |
-10 |
100 |
|
2.9 |
374 |
1 |
18 |
-17 |
289 |
|
2.2 |
387 |
7.5 |
16 |
-8.5 |
72.25 |
|
2.6 |
452 |
3 |
7 |
-4 |
16 |
|
2.1 |
462 |
10 |
6 |
4 |
16 |
|
1.8 |
436 |
16.5 |
11 |
5.5 |
30.25 |
|
1.9 |
424 |
13 |
13 |
0 |
0 |
|
0.95 |
308 |
30 |
28 |
2 |
4 |
|
1.3 |
430 |
25.5 |
12 |
13.5 |
182.25 |
|
1.9 |
449 |
13 |
9 |
4 |
16 |
|
2.2 |
325 |
7.5 |
26 |
-18.5 |
342.25 |
|
1.2 |
358 |
27.5 |
21.5 |
6 |
36 |
|
1.4 |
467 |
23 |
4 |
19 |
361 |
|
1.8 |
489 |
16.5 |
1 |
15.5 |
240.25 |
|
1.2 |
485 |
27.5 |
2 |
25.5 |
650.25 |
|
1.1 |
450 |
29 |
8 |
21 |
441 |
|
1.4 |
353 |
23 |
23 |
0 |
0 |
|
1.8 |
358 |
16.5 |
21.5 |
-5 |
25 |
|
2.3 |
443 |
5 |
10 |
-5 |
25 |
|
1.7 |
422 |
19 |
14 |
5 |
25 |
|
1.3 |
368 |
25.5 |
19 |
6.5 |
42.25 |
|
1.5 |
416 |
21 |
15 |
6 |
36 |
Σd² = 4289.5
n = 30
rs = 1 - 6Σd²/(n*(n²-1)) = 1 - 6*4289.5/(30*(30² -1)) =
0.0457
df = n-2 = 28
p-value = 0.8105
As p-value > 0.05, we can conclude that there is no
significant correlation between the home price and the square
footage.
