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.

Since day one of the coronavirus pandemic, the U.S. has not had enough tests. Faced with this shortage, medical professionals used what tests they had on people with the worst symptoms or whose ...