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Introduction
A sample that accurately represents a population is chosen through sampling. This is important as it makes research possible, economical, and accurate. Sampling is simply choosing a sample from a population under research. Among the factors that make the research generalizable is the sampling method. Sampling methods are classified as probability or non-probability.
Non-probability Sampling
Non-probability sampling employs methods that are not randomized, with the researcher mostly relying on their own judgment to select participants for the sample. Participants are selected based on ease of access, such as selecting friends or classmates. Although this approach may offer convenience and usefulness, its ability to apply findings beyond the specific sample is limited. Non-probability sampling methods such as Convenience Sampling, Purposive Sampling, Quota Sampling, and Snowball Sampling are often more cost-effective, less complex, and simpler to implement compared to probability sampling (Showkat & Parveen, 2017). These non-probability sampling techniques can be beneficial in studying particular phenomena and generating useful insights.
Probability Sampling
Probability sampling guarantees that each sample has an equal chance of being chosen, ensuring that every element in the population has a recognized non-zero possibility of being included. This method is beneficial in producing representative samples of the population. To illustrate, if there are 250 students in a college, probability sampling would entail randomly selecting participants from the entire student population. Suitable probability sampling techniques for this situation consist of Simple Random Sampling, Stratified Random Sampling, Systematic Random Sampling, Cluster Sampling, and Multi-stage Systematic Sampling (Showkat & Parveen, 2017).
Researchers can use conditional probability of non-conditional probability. Conditional probability is employed when two events have a relationship, and the likelihood of one event occurring is dependent on the occurrence of the other event (Hájek, 2011). On the other hand, unconditional probability is utilized when there is no relationship between the events, and the probability of one event happening is not impacted by the occurrence or non-occurrence of the other event.
Conclusion
Obtaining noteworthy research findings through sampling is possible. On the other hand, it is critical to acknowledge the potential disparities between the population and the sample, which can lead to errors. Thus, utilizing an appropriate and effective sampling technique is crucial.
References
Hájek, A. (2011). Conditional Probability. Journal of Phylosophy of Statistics , DOI:10.1016/B978-0-444-51862-0.50003-4.
Showkat, N., & Parveen, H. (2017). Non-Probability and Probability Sampling.
this is was qousation 
This week covers probability and non-probability sampling. Discuss in detail the characteristics of probability and nonprobability sampling. Discuss why researchers would use conditional probability instead of unconditional probability in their study.

  
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