Hypothesis testing based on chi-square independence of attributes.
A student team examined parked cars in 4 different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At _ = .05, does vehicle kind vary by mall location?
|
Vehicle Type
|
Somerset
|
Oakland
|
Great Lakes
|
Jamestown
|
Row Total
|
|
Car
|
44
|
49
|
36
|
64
|
193
|
|
Minivan
|
21
|
15
|
18
|
13
|
67
|
|
Full-sized Van
|
2
|
3
|
3
|
2
|
10
|
|
SUV
|
19
|
27
|
26
|
12
|
84
|
|
Truck
|
14
|
6
|
17
|
9
|
46
|
|
Column Total
|
100
|
100
|
100
|
100
|
400
|