If you're like I am, you probably find the statistics associated with the COVID-19 virus to be contradictory and confusing – a bewildering patchwork of testing programs initiated by cities, counties ...
Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.
Federal regulators surprised the trucking industry the day after Christmas by announcing an increase in the minimum annual rate for random drug testing for drivers from 25% to 50% starting on Jan. 1.
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