Line graph usage is best described as:

Line graph usage is best described as:

• A. For showing relationships between two co-variables across a continuous scale
• B. For categorical data
• C. To display the distribution of data
• D. To illustrate the distribution of data

Answer: (A)

Line graphs are used to show how a variable changes as another variable changes along a continuous axis, typically time. This makes them ideal for illustrating the relationship between two quantitative variables and for spotting trends across the continuum. Categorical data aren’t well suited to line graphs because the categories break the sense of continuity; bar charts or other plots are better for that. If you’re looking to describe distribution rather than a relationship between variables, histograms or box plots are more appropriate, as they summarize where data lie and how spread out they are.

Line graphs are used to show how a variable changes as another variable changes along a continuous axis, typically time. This makes them ideal for illustrating the relationship between two quantitative variables and for spotting trends across the continuum. Categorical data aren’t well suited to line graphs because the categories break the sense of continuity; bar charts or other plots are better for that. If you’re looking to describe distribution rather than a relationship between variables, histograms or box plots are more appropriate, as they summarize where data lie and how spread out they are.