The hypothesis-testing contains two parts here: one is the documentary study, the other is positive research.

假设检验从两方面着手，一是文献分析，另一为实证调研。

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Using documentary study, questionnaire, statistics, etc, the article analyzed the physical conditions of college students, and presented the relevant solutions.

本文运用文献研究，问卷调查、数理统计等方法分析了普通高校大学生的身体素质状况，并提出相应的对策。

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This study mainly employs the methods of documentary, statistic analysis, international contrast and expert talks and so on.

本研究主要采取文献法、统计分析法、国际比较法和专家访谈等方法。

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Among the other DGA winners were Searching for Sugar Man director Malik Bendjelloul, who won the guild's documentary award for his study of the obscure singer-songwriter Sixto Rodriquez.

BBC: Ben Affleck wins Directors Guild award

The 2007 film Documentary Alice Neel by her grandson Andrew Neel is also a wonderful personal study of the artist's life.

FORBES: Portrait Of A Lady

The ongoing study is like the science-y version of the "7-Up" documentary series -- with researchers checking in on the lives of the subjects at several-year intervals.

CNN: Does pre-K work? Ask old people