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# Friday math movie: Hans Rosling’s 200 Countries, 200 Years, 4 Minutes

By Murray Bourne, 28 Jan 2011

Hans Rosling's 200 Countries, 200 Years, 4 Minutes - The Joy of Stats shows him enthusiastically indicating trends in wealth amongst different countries.

Suggestion: View it full screen.

The video demonstrates some of Rosling's interesting work in data visualization. He teaches global health, and believes (quite rightly) that being able to see trends in data across time is far better than trying to understand it from tables of information.

He shows us how life expectancy has increased in the last 200 years across all countries in the world. The Spanish flu epidemic had a huge effect on life expectancy. Some of the "poor and sick" countries caught up quickly when the chains of colonization were broken.

He uses a semi-log graph for his visualization. The horizontal axis (per capita income) increases by a factor of 10 for each division, while the vertical axis (life expectancy) uses a linear scale.

I featured Rosling before in Great Statistics - Gapminder".

### 2 Comments on “Friday math movie: Hans Rosling’s 200 Countries, 200 Years, 4 Minutes”

1. Celeste says:

I loved that 200 Countries, 200 Years, 4 minutes - I wish there was a way to make all sujects that visually stimulating. I am going to explore this site further since I am trying to find something that will help my teenager get Math, especially for graduation.

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