Correlation and Regression
A survey was carried out to find the salaries for technicians working in maintenance
at Atlanta International Airport. The number of years spent in education was
recorded as was their yearly salary. Below in the table are the results for this survey.
Education (years) Income ($ ,000s)
8 20
12 28
10 27
20 55
16 45
18 60
13 29
12 25
16 37
14 32
a) Describe in words and statistical terms the relationship between the number of
years in education and corresponding salary earned. Discuss the results in terms of
this sample and the population in general. (50 points)
b) If William has 16 years in education what would be the expected yearly salary?
(25 points)
c) If John only has 5 years of education what salary would he expect on average?
(25 points)
