A simple random sample is a subset of a statistical population where each member of the population is equally likely to be chosen.

What is the difference between representative samples and random samples, and how are they are used to reduce sampling bias?

Our third Methods 101 video explores some of the ways that nonprobability surveys differ from traditional probability-based polls. Random Sampling Survey Question Wording Mode effects What are ...

The use of a grid opens the way to more detailed study of the nature of the non-random distribution of species in the field, especially to the detection of mosaic patterns not normally revealed by ...

(6) The number of progeny produced by a parasite that does not search at random depends on the host density and on the parasite's response to the host distribution. (7) It may be possible to model non ...