Question 4
a.
Subscription
Scatter Diagram
7
6
5
4
3
2
1
0
0
10
20
30
40
Age
Comment:
b.
𝑟=
𝑛(∑𝑥𝑦) − (∑𝑥)(∑𝑦)
√[𝑛∑𝑥 2 −(∑𝑥)2 ][𝑛∑𝑦 2 −(∑𝑦)2 ]
n=
∑xy = 856
∑x = 332
∑y = 19
∑
0.310882529
50
60
70