random sample

views updated Jun 27 2018

random sample A sample in which each individual measured or recorded (e.g. organism, site, or quadrat) is independent of all other individuals and also independent of prominent features of the area or other unit being sampled. In ecological field surveying, random quadrat sampling is most easily achieved by superimposing a grid over the sample area, and identifying a series of random co-ordinates, using random-number tables, at which to locate the quadrats. Alternatively, a random-walk technique may be used.

random sample

views updated Jun 08 2018

random sample A sample in which each individual measured or recorded (e.g. organism, site, or quadrat) is independent of all other individuals and also independent of prominent features of the area or other unit being sampled. In ecological field surveying, random quadrat sampling is most easily achieved by superimposing a grid over the sample area, and identifying a series of random co-ordinates, using random-number tables, at which to locate the quadrats. Alternatively, a random-walk technique may be used.

random sample

views updated May 17 2018

random sample Sample in which each individual measured or recorded is independent of all other individuals and also independent of prominent features of the area or other unit being sampled. In ecological field surveying, random quadrat sampling is most easily achieved by superimposing a grid over the sample area, and identifying a series of random co-ordinates, using random-number tables, at which to locate the quadrats. Alternatively, a random-walk technique may be used.

random sample

views updated May 14 2018

random sample, random sampling See SAMPLING.

random sample

views updated May 18 2018

random sample (ran-dŏm) n. see sample.

random sampling

views updated Jun 08 2018

random sampling See sampling.

random sampling

views updated May 08 2018

random sampling See SAMPLING METHODS.