Question

Determine correlation coefficient and determination coefficient.

plastic waste	0.5	1.0	2.0	1.8	2.2	2.8	3.9	3.0	5.5
family size	2	2	3	3	3	4	5	5	8

Correlation coefficient (r)

determination coefficient. (r²)

Answer 1

Given data:

plastic waste (X)	family size (Y)
0.5	2
1	2
2	3
1.8	3
2.2	3
2.8	4
3.9	5
3	5
5.5	8

correlation coefficient (r)

n=10

so

r=0.9765

Correlation Coeffcient (r) = 0.9765

Determination coefficient (r²) = 0.9765² = 0.9536

Determination coefficient (r²) = 0.9536