An illustration shows that the Covid-19 test involves a swab going all the way to the back of the nose. Our verdict This illustration is from a medical imaging company showing a nasopharyngeal swab ...

Understanding the differences between convenience, target, and self-selected samples. Representative samples and sampling are addressed multiple times in the cGMPs. For example, in Part 21 of the Code ...

Patients in two acute care university hospitals were entered into the study using the following method: twenty patients were selected each day from all floors/units in each hospital until the hospital ...

A new two-photon fluorescence microscope can capture high-speed images of neural activity at cellular resolution thanks to a new adaptive sampling scheme and line illumination. The illustration shows ...

In a simple random sample, each individual in the population has an equal probability of being chosen. Additionally, each sample of size n has an equal probability of being the chosen sample. This ...

Sampling is a type of scientific surveying which can save time and money and give information on the population of animals and plants. There are many different types of sampling; the most useful type ...