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RESEARCH POPULATION, SAMPLE SIZE & SAMPLING METHODS - QUANTITATIVE RESEARCH (TAGALOG SERIES)

Doc Ed Padama
246K subscribers
162K views 4 years ago
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Intro

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A population is the entire group that you want to draw conclusions about. A sample is the specific group that you will collect data from. The size of the sample is always less than the total size of the population. In research, a population doesn't always refer to people

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Sample is the subset of the population. The process of selecting a sample is known as sampling

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Simple random sampling 2. Systematic sampling 3. Stratified sampling 4. Clustered sampling

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Probability Sampling Methods 1. Simple random sampling In this case each individual is chosen entirely by

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Systematic sampling Individuals are selected at regular intervals from the sampling frame. The intervals are chosen to ensure an adequate sample size.

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Stratified sampling In this method, the population is first divided into subgroups or strata who all share a similar

7:55

Clustered sampling In a clustered sample, subgroups of the population are used as the sampling unit, rather than individuals. The population is divided into subgroups, known as clusters, which are randomly selected to be included in the study.

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Convenience sampling Convenience sampling is perhaps the easiest method of sampling, because participants are selected based on availability and willingness to take part.

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Quota sampling This method of sampling is often used by market researchers. Interviewers are given a quota of subjects of a specified type to attempt to recruit. For example, an interviewer might be told to go out and select 20 adult men, 20 adult women, 10 teenage girls and 10 teenage boys so that they could interview them about their television viewing.

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Purposive sampling (Judgement) Also known as selective, or subjective, sampling, this technique relies on the judgement of the researcher when choosing who to ask to participate. Researchers may implicitly thus Choose a representative sample to suit their needs, or specifically approach individuals with certain characteristics

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Snowball sampling This method is commonly used in social sciences when investigating hard to reach groups. Existing

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RESEARCH POPULATION, SAMPLE SIZE & SAMPLING METHODS - QUANTITATIVE RESEARCH (TAGALOG SERIES)
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162,880Views
2021Mar 23

Doc Ed Padama

246K subscribers