Assertion: poll's sample | /r/HasProperty | selected
Facets:
value: randomly
type: MANNER
value: from the population
type: OTHER
Source sentences:
text: If you can call or e-mail yourself into a sample, why would you believe the sample was randomly selected from the population?
text: Such surveys suffer from the fault that the sample is self-selected, that is, you decide whether you wish to participate.