Module 3 Exercise
1
What does a correlation look like?
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Math Readiness Test
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Math Grades
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10
|
90
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4
|
30
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7
|
60
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9
|
80
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6
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50
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8
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70
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5
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40
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If you then draw a line, so that the
plotted points are on or as near to the line as possible, you have the
regression line.
This is a positive correlation, because
as scores on one measure go up, so do scores on the other measure. You
could also say that as scores on one measure go down, so do scores on the
other measure. If the scores are moving in the same direction, the regression
line will go from lower left to upper right, and it is a positive relationship.
This is also considered a strong relationship,
because all points are on or very close to the line.
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