Gapminder Life Expectancy This dataset contains life expectancy data at birth for countries from 1800 to 2100. Sourced from the Gapminder Foundation, this data is also in a "wide" format, with years as columns. It's a classic example for creating visualizations that show how life expectancy has changed globally over a long time span.

Source URL: https://www.gapminder.org/data/

Attribute Descriptions country: Categorical (The name of the country).

Years (1800 through 2100): Quantitative and Temporal (The life expectancy value for each corresponding year).