Published by: sadikshya
Published date: 14 Jun 2021
Under these non-probability sampling methods of sampling, there is no pre-assigned probability of selection of sample units to be included in the sample. Some of the methods of non-probability are given as follows:
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In this method, the researcher deliberately or purposively selects the sample units based on their own knowledge or experience for the study of the population. The choice of the selection is supreme and nothing is left to chance.
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In this method, the researcher selects the sample units according to their convenience in terms of availability and accessibility of the sample units. This is one of the most unscientific methods of sampling.
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This is a special form of stratified sampling. In this method, the population is divided into different strata. Then the number of sample units (quota) for each stratum is decided and the researcher selects the sample units from each stratum to fulfill the desired quota of each stratum according to their conveniences. This method is used mostly in opinion surveys.
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In this method, the researcher selects the sample units according to the referral process of the previous respondents. This method is used when it is difficult to find the sample units for the study.
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In this method, the sample is not actually selected but people themselves come to participate in the sample. People have full discretion whether or not they want to include in the sample. This method is more frequently used by TV, Radio, and newspapers, etc.
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