Line
What type of data does a line graph represent?
Line graphs primarily represent continuous data over time. However, it also shows relationships between other quantitative variables.
Time-series data: Most common use case for line graphs. They show how a particular variable (e.g., stock prices, temperature, sales) changes over a continuous time period.
Relationships between variables: Line graphs also show the relationship between two quantitative variables, where one is not necessarily time.
For example, a line graph to show how fuel efficiency changes with a car's speed.
Trends and patterns: Line graphs illustrate trends, patterns, and fluctuations over time or across different values.
Note: While line graphs technically connect categorical data points (e.g., sales per product category), this is generally discouraged as it can be misleading. Bar charts or other graph types are usually better suited for displaying categorical data.
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