Gallup: Are you a religious person?

7 charts that reveal the most – and the least – religious people across the world… and how it is the young who are the biggest believers:
http://www.independent.co.uk/news/world/asia/7-charts-that-reveal-religions-role-around-the-world-10170978.html

Methodology:

The question “Irrespective of whether you attend a place of worship or not would you say you are: a. a religious Person, b. not a religious person, c. a convinced atheist, d. do not know/no response.” Was asked as part of the WIN/Gallup International End of Year Survey.

The End of Year Survey is an annual tradition initiated by and designed under the chairmanship of Dr. George Gallup in 1977. It is conducted every year since then. This year it was carried out by the WIN/Gallup International Association in 65 countries around the world.

Sample Size and Mode of Field Work:

A total of 63,898 persons were interviewed globally. In each country a representative sample of around 1000 men and women was interviewed either face to face (31 countries; n=33862), via telephone (12 countries; n=9784) or online (22 countries; n=20356). The field work was conducted during September 2014 – December 2014. The margin of error for the survey is between 2.14 and 4.45 +3-5% at 95% confidence level.

The global average has been computed according to the share of the covered adult population of the surveyed countries.