Line charts and mixed charts

Line graphs are used to show quantity values in a continuous time interval. It is used to demonstrate trends or to analyze changes over time.

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• Examples
  Budgets for watter management Sentences for starting fires National budget Improvements in watter management Defense budgets Five years sending suffering to Yemen CO concentration is still growing (greenpeace.es) CO concentration is still growing (ext. newspaper) Salaries evolution

When data values change abruptly and often, you can use a line graph to demonstrate that instability.

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You can add non-continuous lines to show the changes in the average between multiple values.

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To present info on acumulated data. Just like the acumulated bar chart, but it works better with more months/years.

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• Examples
  Dirty energy in your invoice

Mixing line charts with bar charts.

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• Examples
  Covid 19 pollution