Activity sampling-an often overlooked tool is activity sampling, usually called worksampling by North American IEs.
活动抽样—一种经常被忽视的工具就是活动抽样，通常被北美的工业工程师们称为工作抽样。
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Sampling: Periodically review samples of your employees' work and check to make sure that it meets the standards you agreed to.
l抽样调查：定期对员工的工作进行抽样调查，确保符合你的标准。
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So in theory this survey is picking up, with a wide range of statistical sampling error, the number of people who work as reporters and correspondents, whether or not that is their actual title.