English to English

noun (n)

• (statistics) the selection of a suitable sample for study(noun.act)

  source: wordnet30
• items selected at random from a population and used to test hypotheses about the population(noun.cognition)

  Synonym:
  sample, sample distribution
  

  source: wordnet30
• measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)(noun.act)

  source: wordnet30