Find out if there is a difference among the income of the adults using One-way ANOVA.
The following study was developed by Economist Simon Fass. Fass surveyed a sample population of low-income households in St. Martin. The variables analyzed were monthly income per adult and choice of rental contract for housing.
All families in St. Martin had to opt for one of 3 available time packages. They could pay in advance for a week, a month, or six months; and the shorter the time package, the higher the unit price. Payment by the week cost 10 to 20 percent more in monthly rent per square meter than payment by the month, and payment by the month cost twice as much as for 6 months. But offsetting the higher unit cost was the advantage of lower cash outlays. To obtain a week of housing required an average prepayment of $1.55. A month cost $5.30 and 6 months $18.90 (Fass, 1987)
You must determine if there is a difference among the income of the adults in respect to the housing contract they choose. Could the data of income be drawn from the same population or are we possibly looking at 2 or maybe 3 different sample population.
|
Observation
|
Term of Rental contract (weeks)
|
Monthly Income
|
|
1
|
1
|
6.5
|
|
2
|
1
|
7.5
|
|
3
|
1
|
9.8
|
|
4
|
1
|
6.5
|
|
5
|
1
|
10.4
|
|
6
|
1
|
5.7
|
|
7
|
1
|
8.9
|
|
8
|
4
|
8.8
|
|
9
|
4
|
6
|
|
10
|
4
|
8
|
|
11
|
4
|
10.4
|
|
12
|
4
|
7
|
|
13
|
4
|
8.4
|
|
14
|
4
|
9
|
|
15
|
4
|
7
|
|
16
|
4
|
4
|
|
17
|
4
|
7
|
|
18
|
4
|
6.5
|
|
19
|
4
|
6
|
|
20
|
4
|
9
|
|
21
|
4
|
4.9
|
|
22
|
4
|
6.8
|
|
23
|
4
|
4
|
|
24
|
4
|
5.5
|
|
25
|
4
|
5.9
|
|
26
|
24
|
6.4
|
|
27
|
24
|
7.2
|
|
28
|
24
|
6.6
|
|
29
|
24
|
4
|
|
30
|
24
|
3
|
|
31
|
24
|
7.8
|
|
32
|
24
|
7.1
|
|
33
|
24
|
4.9
|
|
34
|
24
|
4.2
|
|
35
|
24
|
5.8
|
|
36
|
24
|
4.6
|
|
37
|
24
|
8.2
|
|
38
|
24
|
7
|
|
39
|
24
|
4.4
|