sampling

nouns

(statistics) the selection of a suitable sample for study
domain category
a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
is a type of (narrower)
the act of choosing or selecting
"your choice of colors was unfortunate"; "you can take your pick"
items selected at random from a population and used to test hypotheses about the population
measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)
domain category
(often plural) systems used in transmitting messages over a distance electronically
is a type of (narrower)
the act or process of assigning numbers to phenomena according to a rule
"the measurements were carefully done"; "his mental measurings proved remarkably accurate"