Linear Modeling Pre-Test
Fed Reserve Bld - Line Drawing
by flickr user Albert Y

(4) Helen’s starting salary is $35 000 per year. If she receives a
raise of $2000 every year after that, how much will she have
earned after working 11 years?

(5) The table below shows how the arm
span of students depends on their heights.
(a) Using linear regression, what is the
line of best fit? Answer to one decimal
place.
(b) What is the arm span of a person 1.67 m tall?
(c) What is the arm span of a person 1.77 m tall?
(d) What is the height of a person with an arm span of 1.50m?
(e) Which of (a), (b),or (c) above is an example of:
Interpolation? Extrapolation?