Where in the world (are pie charts popular)?

In my prior post I used data from Google Trends to look at how to summarize complex data. The data I pulled compared how often "pie chart" is searched for compared to "bar chart". In this data set you can also compare the relative search popularity by country. The data is normalized to the number of overall searches coming from that country.

While I was just using these terms to get a data set, this information is actually also interesting - Relative to all searches in a country, India's users are twice as likely to be searching for either pie chart or bar chart. Does this mean that India has more studious users while US users are occupied by searching for the latest Tiger Woods news? I don't know how language is accounted for - if the normalization just for searches in a single language this would explain the difference, as English language searches would more likely to be conducted by business users. This brings up an important point about knowing exactly how data is 'manipulated' prior to drawing any sweeping conclusions.

I've added a second series (green dot) that compares the relative popularity of bar vs. pie (pie chart popularity/bar chart popularity) within a country. Interestingly, "bar chart, is almost searched for as often as "pie chart" in India, the Philippines, etc. compared to the US, where "bar chart" is half the search volume of "pie chart". Go draw your own conclusions about that.