The random sample survey is a commonly used method in market research and such surveys generally are considered to provide more robust results than purposive or convenience (such as quota) samples.

To understand the reasons for the public’s irrational use of antibiotics based on the health belief model (HBM). A questionnaire survey was conducted based on cluster random sampling in Chongqing, ...

Sampling protocols have drastically changed with the discovery of compressive sensing (CS) data acquisition and signal recovery 1,2. Prior to the development of CS theory, the Shannon-Nyquist theorem ...