Making observations on famous people exclusively results in a biased and non-random sample, from which results or observations cannot be generalized.

A non-random sample of the topics that have appeared in the Editorial over the past 40 years:

"We think the comptroller's number is unrealistically high and the methodology they used, which was a non-random and extremely small sample, was not prudent," Mr. Borin said.

To these real residue counts, pseudo-counts were added to better approximate the full set of related sequences in nature (of which only an incomplete, non-random sample is known).

(1990) compared the information/orientation CAPE sub-test with a standard clinical interview and other dementia measures in a non-random sample of those aged 75 +.

A sample that is not random is called a non-random sample or a non-probability sampling.

To achieve this, researchers must use random and non-random samples to obtain concise information about the topic being studied.

The quotas, combined over interviewers, thus form a non-random stratified sample.

The study was subsequently heavily criticised for its non-random sample and its use of statistics and also its lack of consistency with astrology.

A recent study examined neuropsychiatric conditions in a non-random sample of 100 British individuals assessed as having DAR.