观察法和专题讨论法适用于探索性调研，问卷调查法适用于描述性调研，而实验法适用于因果性调研。

While observation and focus groups are best suited for exploratory research, surveys are best suited for descriptive research and experiment for causal research.

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观察法和专题讨论法适用于探索性调研，问卷调查法适用于描述性调研，而实验法适用于因果性调研。

While observation and focus groups are best suited for exploratory research, surveys are best suited for descriptive research and experiment for causal research.

youdao