In 1948, polling methodology routinely used "quota" samples, which gave interviewers the ability to choose respondents more or less on their own, with "quotas" for the number of men, women, young ...

Take a convenience sample, a quota sample and a random sample and compare the average height in the samples to the average height in the class as a whole. Assessment Recommendations.

However, at about that same time, the first efforts were made to develop alternative non-random quota sampling methods. Quota samples are non-probability samples that are controlled to be distributed ...

Rather than sampling every single business and household in the U.S., the BLS relies on samples. The Current Employment Statistics program samples approximately 119,000 businesses and government ...

This survey was conducted exclusively on behalf of The Irish Times by Ipsos B&A, among a quota sample representative of adults aged 18 years and upwards. The total number of interviews conducted ...