An association between salary and life enjoyment.

Sociologists investigated whether there is an association between salary and life
enjoyment. They administered questionnaires to randomly selected participants who
reported their salary in thousands of dollars (salary) and a battery of questionnaire items
that probe life enjoyment. The life enjoyment items were collapsed into a continuousvalued composite index of life enjoyment (LE). Given their data (see Table 3 below), is
there an association between salary and life enjoyment? If so, how does a change in salary
quantitatively relate to a change in life enjoyment? Include a scatterplot of the data and the
line of best fit.
Table 3. Salary in thousands of dollars (salary) and life enjoyment composite index (LE).
Subject salary LE
1 29 24
2 25 13
3 37 30
4 16 21
5 35 13
6 32 36
7 29 18
8 48 32
9 18 5
10 6 16
11 28 14
12 35 16
13 31 14
14 5 16
15 13 12
16 20 5
17 30 25
18 36 26
19 17 13
20 29 20