sample, snowball
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Snowball sampling — In social science research, snowball sampling is a technique for developing a research sample where existing study subjects recruit future subjects from among their acquaintances. Thus the sample group appears to grow like a rolling snowball. As… … Wikipedia
Sample (statistics) — In statistics, a sample is a subset of a population. Typically, the population is very large, making a census or a complete enumeration of all the values in the population impractical or impossible. The sample represents a subset of manageable… … Wikipedia
snowballing technique — snowballing technique, snowball sample Snowball samples begin from a core of known elements and are then increased by adding new elements given by members of the original sample. They are so called on the analogy of the increasing size of a… … Dictionary of sociology
ВЫБОРКА ПО МЕТОДУ «СНЕЖНОГО КОМА» — (SNOWBALL SAMPLE) Иногда при проведении исследования невозможно составить полный список, представляющий все изучаемое население (примером ситуации такого рода может служить исследование проституток). Отсутствие такого списка не позволяет… … Социологический словарь
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… … Universalium
Social effects of Hurricane Katrina — Hurricane Katrina led to many social effects.Initially, many lives were lost, while many more were disrupted. The event has left hundreds of thousands without access to their homes or jobs, has separated people from relatives, and has inflicted… … Wikipedia
Pingu episodes series 4 — This is an list of episodes with synopses for series 4 of the stop motion animated television series Pingu . =Series 1 (1986 1991)= =Series 2 (1991 1994)= =Series 3 (1994 1996)= =Series 4 (1998)= Pingu s DisadvantagePingu is out on his sledge. He … Wikipedia
The Rocky and Bullwinkle Show — Boris Natasha redirects here. For the movie by that name, see Boris and Natasha: The Movie. This article is about the television series. For the video game, see The Adventures of Rocky and Bullwinkle and Friends (video game). For the 2000 movie,… … Wikipedia
Sampling (statistics) — Sampling is that part of statistical practice concerned with the selection of individual observations intended to yield some knowledge about a population of concern, especially for the purposes of statistical inference. Each observation measures… … Wikipedia
