GCSE Maths (AQA)

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Scatter Diagrams

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Statistics Statistics

Scatter Diagrams

4:46 Bivariate Data & Scatter Diagrams
Spec S6
Previous Comparing Cumulative Frequency Graphs & Box Plots Next Correlation
  • Scatter diagrams display bivariate data, which is data with two measurements taken for each item in the sample.
  • Scatter graphs allow us to compare the relationship between the two measurements.
  • Each axis on the scatter graph represents one type of data.
  • The points on the scatter graph represent individual members of the sample or population.
  • The x-coordinate of a point represents one measurement, and the y-coordinate represents the other measurement.
  • Scatter graphs can show if there is a relationship between the two measurements.
  • In the example given, as age increases, the test score generally increases.
  • To plot missing points on a scatter graph, we can use the x-axis and y-axis to find the corresponding values and draw lines to the correct data point.
  • By comparing the table and graph, we can identify missing points and plot them using the given values.

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