Question

Position A: Probability sampling represents the best strategy for selecting research participants.

By Day 4

Post a restatement of your assigned position on sampling strategies. Explain why this position is the best strategy for selecting research participants. Support your explanation with an example and support from the scholarly literature. Next, select a data collection method (e.g., surveys, interviews, observations) and briefly explain at least one strength and at least one limitation. Then, identify a potential ethical issue with this method and describe a strategy to address it. Last, explain the relationship between measurement reliability and measurement validity using an example from your discipline.

Answer 1

Restatement of assigned position on sampling strategies :-

  Probability sampling represents the best strategy for selecting research participants as it allows researchers to select participants at random from a specific population. Researchers generally use probability sampling based on underlying theoretical distributions of observations, or sampling distributions. This provides every individual in that population the equal chance of being selected and it will result the real representation of the population.

The most important thing is that samples which were selected using probability sampling methods are more representatives of the target population. Random sampling, Stratified sampling, Cluster sampling, and Sampling using multiple probability techniques are the different types of probability sampling. These types of probability sampling vary in the selection and categorization of the sample size, selection methods, and sometimes combining sampling methods.

Selecting a data collection method and explaining of strength and limitation:-

Let us select Surveys "a data collection method" which is used mostly in the form of questionnaires for gathering information from participants.

The survey can be conducted easily. Information can be collected very easily and in a faster way so these are the strength of the survey but sometimes inability to know the validity of responses can be the limitation of surveys since sometimes participants can lack the interest to provide true information. Ethical issues with surveys like participants' identification and it can be avoided by guaranteeing confidentiality, providing details about the study and the researcher's and provide consent to protect participants' rights.

Relationship between measurement reliability and measurement validity :-

With the help of Reliability consistency and stability of repeatable actions or behaviors can be measured over time while Validity measures the meaningfulness of research components. It also helps to judge the effectiveness and connection between the research components.

The effectiveness of adopting healthy eating habits which will result in better health outcomes, can be an example of measuring the reliability from my discipline. Presenting a healthy eating workshop at work and asking employees whether they will adopt a healthy eating routine, you may get answers but clearly, you can not assume if they are valid decisions or bias answers due to the recent presentation, can be an example of validity measurement.

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