The following data shows the amount of money spent by 10 customers who visited a market in a certain year and their social classes' index.
|
Amount(1000)
|
57
|
54
|
49
|
42
|
58
|
32
|
30
|
24
|
20
|
18
|
|
social class index
|
113
|
111
|
107
|
103
|
100
|
96
|
94
|
84
|
74
|
76
|
i) Calculate correlation coefficient.
ii) Calculate coefficient of determination.