b.
Previously you may have conducted an observational study using tubular vision.
Typical data is shown in the table below. The LSRL is y = 1.66+0.13x.
C.
Distance from wall (in)
144
132
120
108
96
84
72
60
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Field of view (in)
20.7
a. Is the association in the tubular vision study strong or weak? Find the
correlation coefficient.
Describe the form, direction, strength, and outliers of the association.
You already know a graphical way to determine if the "form" is linear. A
mathematical description of "direction" is the slope. A mathematical
description of "strength" is the correlation coefficient. Describe the form,
direction, and strength in more mathematical terms than you did in part (b).
19.6
17.3
16.2
14.8
13.1
11.4
9.3
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