Transcription of WORST-CASE VERSUS RANDOM SAMPLING
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WORST-CASE VERSUS RANDOM SAMPLING
INDUSTRIAL HYGIENE. EXPOSURE ASSESSMENTS: WORST-CASE VERSUS RANDOM SAMPLING . By Jerome E. Spear, CSP, CIH. T. he two types of SAMPLING strategies to consider when planning an exposure based on the central tendency and spread (or assessment study are WORST-CASE dispersion) of the sample distribution. Some SAMPLING and RANDOM SAMPLING . The broad RANDOM SAMPLING applications include the difference is that WORST-CASE SAMPLING involves following: more subjectivity than a RANDOM SAMPLING approach. o Describe the 8-hour time-weighted average (TWA) concentrations over In WORST-CASE SAMPLING , we non-randomly different days for a single worker or select the worker(s) who are subjectively SEG. believed to have the highest exposure(s). If no o Describe the 15-minute TWA. WORST-CASE sample exceeds the occupational concentrations over one workshift for a exposure limit(s), we are subjectively satisfied single worker or SEG.
1 © 2004 J.E. Spear Consulting, LLC INDUSTRIAL HYGIENE EXPOSURE ASSESSMENTS: WORST-CASE VERSUS RANDOM SAMPLING By Jerome E. Spear, CSP, CIH he two types of sampling ...
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