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This question is about list of skills.
Probability vs. non-probability sampling
The difference between a probability sample and a non-probability sample is that a probability sample refers to a sampling method in which each subject has the same chance of being selected to be sampled, while a non-probability sample is a sampling method in which each subject is deliberately selected as a sample for the study.
A probability sample sees a random selection process for its prospective participants. Each subject has the same likelihood of being chosen to participate in the study. The main objective of using probability sampling is to receive a sample that is a wider representation of a population so that the results of the study may be generalized to a degree.
A non-probability sample is not a random selection process. Instead, it is a process that chooses subjects to participate in a study based on some common characteristic or because those subjects all belong to a specific group. The goal of a non-probability sample is to draw general conclusions from the study about a particular group or subjects with similar factors.
Key Takeaways:
| Probability sample | Non-probability sample |
|---|---|
| Probability sample refers to a sampling method in which each subject has the same chance of being selected to be sampled. | A non-probability sample is a sampling method in which each subject is deliberately selected as a sample for the study. |
| A probability sample is random in its selection of subjects. | A non-probability sample is not random in its selection of subjects, because it selects them based on common characteristics, or because the subjects all belong to a specific group. |
| The main objective of using probability sampling is to receive a sample that is a wider representation of a population so that the results of the study may be generalized to a degree. | The goal of a non-probability sample is to draw general conclusions from the study about a particular group or subjects with similar factors. |
| Probability sampling is often used in quantitative research because of its statistical accuracy. | Non-probability sampling is often used in qualitative research because it can be used to get feedback from subjects to generate new ideas. |
| Probability sampling sees researchers testing a predetermined hypothesis. | Non-probability sampling sees researchers develop a hypothesis after they collect the information from the subjects of the study. |
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