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Example of Scatterplots for Pearson's r Values

Scatterplots are highly effective for visually illustrating the varying strengths and directions of Pearson's rr. A perfect negative relationship (r=1.00r = -1.00) is depicted as a tight, downward-sloping straight line, whereas a moderate negative relationship (r=0.50r = -0.50) shows points loosely clustered around a downward trend. A value of r=0r = 0 appears as a shapeless cloud of points, indicating no relationship. Conversely, a moderate positive relationship (r=+0.50r = +0.50) shows a loose upward trend, and a perfect positive relationship (r=+1.00r = +1.00) features points falling exactly on an upward-sloping diagonal line.

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Updated 2026-05-04

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Research Methods in Psychology - 4th American Edition @ KPU