calculate the coefficient of correlation between x and y and comment on their relationship :
x : -3 -2 -1 1 2 3
y : 9 4 1 1 4 9
Dear Student,
Please find the solution to this question.
Since, r =0. Therefore, we can say that there is no co-relation between X and Y.
Please find the solution to this question.
X |
Y |
|
x2 |
y2 |
xy |
|
-3 |
9 |
-3 |
9 |
4.33 |
18.75 |
-12.99 |
-2 |
4 |
-2 |
4 |
-0.66 |
0.44 |
1.32 |
-1 |
1 |
-1 |
1 |
-3.66 |
13.40 |
3.66 |
1 |
1 |
1 |
1 |
-3.66 |
13.40 |
-3.66 |
2 |
4 |
2 |
4 |
-0.66 |
0.44 |
-1.32 |
3 |
9 |
3 |
9 |
4.33 |
18.75 |
12.99 |
|
|
|
|
|
|
|
ΣX = 0 |
ΣY = 28 |
|
Σx2 = 28 |
|
Σy2 = 65.18 |
Σxy = 0 |
Since, r =0. Therefore, we can say that there is no co-relation between X and Y.