Step 1 : Introduction to the question "George Gallup is known for his work primarily in which field?"
George Gallup was a pioneer of survey sampling techniques and inventor of the Gallup poll, a successful statistical method of survey sampling for measuring public opinion. Gallup is often credited as the developer of public polling. Gallup founded the American Institute of Public Opinion, which evolved into Gallup -- in 1935. His legacy of integrity and independence has made Gallup among the most famous and trusted brand names in the world. Today, Gallup's World Poll of more than 160 countries continues his noble mission.