Essay

In a scatterplot, when multiple individuals have identical scores, their data points overlap perfectly. Identify and describe the three distinct visual techniques a researcher can use to represent this overlap directly on the graph.

Question: In a scatterplot, when multiple individuals have identical scores, their data points overlap perfectly. Identify and describe the three distinct visual techniques a researcher can use to represent this overlap directly on the graph.

Sample answer: A researcher can visually indicate overlapping points in a scatterplot by: 1) offsetting the data points slightly along the xx-axis, 2) printing the number of individuals in parentheses directly next to the point, or 3) increasing the size or darkness of the point in proportion to the number of overlapping individuals.

Key points:

  • Offsetting the points slightly along the xx-axis.
  • Printing the number of individuals in parentheses directly next to the point.
  • Increasing the size or darkness of the point in proportion to the number of overlapping individuals.

Rubric: Graders should award credit for identifying each of the three techniques: 1) Offsetting the points along the xx-axis, 2) Printing the number of individuals in parentheses next to the point, and 3) Modifying the point by increasing its size or its darkness proportionally.

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Updated 2026-05-26

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Research Methods in Psychology - 4th American Edition @ KPU

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