Q1) Study the 5 pairs of data points given in table below:
i
|
x
|
y
|
1
|
-2
|
4
|
2
|
-1
|
1
|
3
|
0
|
0
|
4
|
1
|
1
|
5
|
2
|
4
|
i) Mathematical relationship between X and Y
ii) Illustrate by computation that, for straight -line regression of Y on x, β1= 0
iii) Illustrate by computation that r =0
iv) Why is there in fact no relationship between x and y , as pointed out by the estimates of β1 and ρ?