The following data represent systolic blood pressure readings on 10 randomly selected females between ages 40 and 82.
|
Age (x)
|
63
|
70
|
74
|
82
|
60
|
44
|
80
|
71
|
71
|
41
|
|
Systolic (y)
|
151
|
149
|
164
|
157
|
144
|
130
|
157
|
160
|
121
|
125
|
(a) Calculate the least-squares regression line for these data.
(b) Plot the points and the least-squares regression line on the same graph.