Historically, public opinion surveys have relied on the ability to adjust their datasets using a core set of demographics – sex, age, race and ethnicity, educational attainment, and geographic region ...

To understand the relative merits of alternative adjustment procedures, each was assessed on its effectiveness at reducing bias for 24 different benchmarks drawn from high-quality, “gold-standard” ...

Some particle size instruments, known as single particle counters, measure individual particle size, while others measure surface area as a function of particle size. Further instruments measure mass ...