The scatter plot below shows the relationship between years of education and income for a representative sample of adults. Which of the following is the best estimate of the average change in a person's income that is associated with going to school for an additional year?
Choose 1
Choose 1

(Choice A)
A
$
1
$1dollar sign, 1

(Choice B)
B
$
2
$2dollar sign, 2

(Choice C)
C
$
3000
$3000dollar sign, 3000

(Choice D)
D
$
7000
$7000dollar sign, 7000

2
2
4
4
6
6
8
8
10
10
12
12
14
14
16
16
18
18
20
20
22
22
24
24
20000
20000
40000
40000
60000
60000
80000
80000Annual income (dollars)Years of education