This paper gathers information through questionnaire survey and in-depth interviews by the method of combining statistical investigation with on-the-spot research.
本文研究采用统计调查与实地研究相结合的方法，通过问卷调查与深度访谈搜集资料。
Gallup was an American statistician who invented the Gallup Poll, a successful statistical method of survey sampling for measuring public opinion.
这位美国的统计学家是盖洛普民意测验的首创者。盖洛普民意测验是为了测量民意对其调查样本进行统计的科学方法。
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