Measurements of the dependent variable
| ||||||
Independent Variable
|
Reading 1
|
Reading 2
|
Reading 3
|
Reading 4
|
Reading 5
|
Average Reading
|
Paper
|
68.4
|
67.0
|
66.2
|
67.2
|
67.1
|
67.18
|
Aluminium
Foil
|
53.7
|
53.8
|
53.9
|
54.1
|
53.9
|
53.88
|
Styrofoam
|
63.9
|
62.0
|
62.5
|
61.8
|
62.5
|
62.54
|
Cardboard
|
50.4
|
49.7
|
50.6
|
49.7
|
49.5
|
49.98
|
Wood
|
50.2
|
50.0
|
50.1
|
49.8
|
49.8
|
49.98
|
Cotton Cloth
|
55.8
|
55.7
|
55.6
|
55.4
|
55.6
|
55.62
|
Control
|
84.9
|
86.4
|
83.1
|
84.8
|
82.4
|
84.32
|
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