Use scatter plots to represent two quantitative variables and fit functions to model relationships.
Interpret the strength of association in a scatter plot
Problem
Describe the strength and direction of the association in this scatter plot description: points lie very close to an upward sloping line.
Big Picture
What this problem is really about
Direction and strength are two separate readings of a scatter plot. Use the left-to-right movement of the point cloud to describe direction, then judge strength by how tightly the points cluster around that overall trend rather than by how steep the trend appears.
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