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Q1) Study the 5 pairs of data points given in table below:
i
x
y
1
-2
4
2
-1
3
0
5
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?
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