MathTwo-Variable Data and ScatterplotsHigh frequency

SAT Math: Read a scatterplot and identify individual data points

29+ practice questions in Praczo

What you need to know

The concept, explained

  • 1

    Each point on a scatterplot represents one observation with an x-value and a y-value. Read the axes and units first.

  • 2

    To find a specific point, locate its x-value on the horizontal axis and its y-value on the vertical axis.

  • 3

    Watch for clusters, outliers, and gaps — they often matter in questions asking about patterns.

  • 4

    Check whether the plot uses linear or logarithmic scales; this affects how you read distances between points.

Common mistakes
  • Swapping the x and y axes when reading a point.
  • Misreading the scale (e.g., each gridline represents 5 but you read it as 1).
Try a sample question

SAT-style practice

A scatterplot shows 20 students' hours studied (x-axis) vs. test score (y-axis). One point is located at x = 6, y = 88. What does this point represent?

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