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2.3 Relationships between Numerical and Categorical Variables

Discussing Relationships between Numerical and Categorical Variables

  • Begin with context: what does the data represent?
  • Compare frequencies between the categories of the categorical dataset.
  • Compare the numerical data corresponding to each category on the basis of shape, spread, centre and presence of outliers.

Note: if you cannot remember how to choose appropriate measures for centre and spread, revise the notes for 1.6 Describing Numerical Distributions.

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