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Scatter Plots: Describing Association & Spotting Outliers (Grade 8)

Free printable Grade 8 statistics worksheet: construct and interpret scatter plots of bivariate data, describe association and clustering, and identify outliers.

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Grade 8 · Math worksheet
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Scatter Plots: Describing Association & Spotting Outliers

Construct or interpret each scatter plot. Describe its association or clustering, and identify any outlier that does not follow the pattern.

  1. 1.
    Plot the paired data, then classify the association: (2, 16), (4, 24), (6, 32), (8, 40), (10, 48).
    024681001020304050plant height (cm)number of leaves
    Plot each ordered pair on the grid.
    • a) Positive association
    • b) Negative association
    • c) No association
  2. 2.
    The scatter plot compares hours studied with test score. Classify its association.
    0246810120714212835hours studiedtest score
    • a) Positive association
    • b) Negative association
    • c) No association
  3. 3.
    Plot the paired data, then classify the association: (2, 32), (3, 28), (4, 24), (5, 20), (6, 16).
    01234560612182430distance from school (km)students who walk
    Plot each ordered pair on the grid.
    • a) Positive association
    • b) Negative association
    • c) No association
  4. 4.
    The scatter plot compares outside temperature with cups of hot chocolate sold. Classify its association.
    0123450714212835outside temperaturecups of hot chocolate sold
    • a) Positive association
    • b) Negative association
    • c) No association
  5. 5.
    The scatter plot compares shoe size with test score. Classify its association.
    0123450714212835shoe sizetest score
    • a) Positive association
    • b) Negative association
    • c) No association
  6. 6.
    How many distinct clusters of points appear in this scatter plot?
    0246810048121620practice sessionsskill score
    • a) One cluster
    • b) Two clusters
    • c) No clusters
  7. 7.
    Scatter plot 1: most points follow one linear pattern. Which ordered pair is the outlier?
    01234560612182430x variabley variable
  8. 8.
    Scatter plot 2: most points follow one linear pattern. Which ordered pair is the outlier?
    01234560816243240x variabley variable
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