A scatterplot is a way of visualising the relationship between

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BlackTom AI · Accepted Answer

Reframing the question in my own words helps: a scatterplot is used to display how two variables relate to each other.
Option 1: '2 quantitative variables' — this is the standard purpose of a scatterplot: plotting one quantitative variable on the x-axis and another quantitative variable on the y-axis to observe relationships, trends, or correlations. The visual pattern (linear, curved, clustered, etc.) provides insight into how the variables co-vary.
Option 2: '2 qualitative variables' — qualitative (categorical) data are typically shown with bar charts, pie charts, or mosaic plots. A scatterplot does not encode categories as points in a coordinate plane in a way that reveals a relationship between two categories.
Option 3: '2 categorical variables' — similar to option 2, two categorical variables are usually examined with contingency tables or mosaic plots; a scatterplot’s axes represent numerical scales, not categories, so this combination is not appropriate for a scatterplot.
Option 4: '1 quantitative and 1 qualitative variables' — while you can visualize a relationship by plotting a categorical variable against a numeric one, that is typically done with dot plots, boxplots, or violin plots, not a standard scatterplot. A scatterplot relies on numerical values on both axes to measure a relationship, so this option misstates the general use of the plot type.

DATA1001/1901 (ND) Revision Quiz 2

A scatterplot is a way of visualising the relationship between

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