Q2. Which of the following statements correctly explains the advantages and disadvantages of systematic sampling in a study on the prevalence of dental caries in a population? A) Systematic sampling is advantageous because it ensures equal probability of selection for all individuals. but it is disadvantageous because it may introduce bias if the sampling interval coincides with a pattern in the population. B) Systematic sampling is advantageous because it eliminates the need for a sampling frame, but it is disadvantageous because it is difficult to implement without prior knowledge of population characteristics C) Systematic sampling is advantageous because it allows random selection of clusters, reducing variability, but it is disadvantag eous because it requires larger sample sizes for precision. D) Systematic sampling is advantageous because it divides the population into strata for better representation, but it is disadvantag eous because it may lead to underrepresentation of small subgroups.

Question

Q2. Which of the following statements correctly explains the advantages and disadvantages of systematic sampling in a study on the prevalence of dental caries in a population? A) Systematic sampling is advantageous because it ensures equal probability of selection for all individuals. but it is disadvantageous because it may introduce bias if the sampling interval coincides with a pattern in the population. B) Systematic sampling is advantageous because it eliminates the need for a sampling frame, but it is disadvantageous because it is difficult to implement without prior knowledge of population characteristics C) Systematic sampling is advantageous because it allows random selection of clusters, reducing variability, but it is disadvantag eous because it requires larger sample sizes for precision. D) Systematic sampling is advantageous because it divides the population into strata for better representation, but it is disadvantag eous because it may lead to underrepresentation of small subgroups.

Answer 1

The correct answer is A) Systematic sampling is advantageous because it ensures equal probability of selection for all individuals, but it is disadvantageous because it may introduce bias if the sampling interval coincides with a pattern in the population.Systematic sampling involves selecting every nth individual from a population list after a random starting point. This method ensures that each individual has an equal chance of being selected, which is advantageous in terms of simplicity and cost-effectiveness. However, it can introduce bias if the sampling interval coincides with a pattern in the population, such as if every nth individual belongs to a particular subgroup. This can lead to an unrepresentative sample and skewed results.

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