A random sample of 11 students produced the
following data, where x is the hours spent
studying per month, and y is the mid term exam
score (out of a maximum of 100 points). The data are
presented below in the table of values.
x
y
9
32
12
47
14
47
16
44
19
50
22
49
25
67
28
80
30
89
31
87
33
82
What is the value of the intercept of the regression
line, b, rounded to one decimal place?