Research Methodology · Unit 6
Sampling Methods
Exam-focused notes for Sampling Methods (Research Methodology, RSM354): what the TU syllabus asks and how it has actually been tested, with 6 solved past questions from this unit.
What this unit covers
- Sampling frame and population
- Simple random sampling
- Stratified random sampling and its conditions
- Cluster sampling and its conditions
- Non-probability sampling techniques
- Sampling error and non-sampling error
Cluster sampling and its conditions
What is cluster sampling? Discuss the conditions under which cluster sampling is more suitable than simple random sampling. [5]
Cluster sampling is a probability sampling technique in which the population is divided into naturally occurring groups or clusters, and then a random sample of clusters is selected. All elements within the selected clusters are included in the sample, or a...
Full solved answer →Stratified random sampling and its conditions
What is stratified sampling? Discuss the condition under which stratified sampling is more suitable than simple random sampling. [5]
Stratified sampling is a sampling technique in which the population is first divided into several non-overlapping subgroups or strata based on some characteristic or attribute. Then, samples are drawn independently from each stratum using simple random samp...
Full solved answer →Write short note on: a) Stratified Sampling b) Plagiarism [5]
Definition: Stratified sampling is a probability sampling technique in which the population is divided into homogeneous subgroups or strata, and samples are drawn from each stratum proportionally or equally. Key Characteristics: - The population is first se...
Full solved answer →Sampling error and non-sampling error
Differentiate between sampling error and non-sampling error. [5]
Definition: Sampling error is the difference between the value of a statistic (calculated from a sample) and the corresponding parameter value (true population value) that arises due to the random nature of sampling. Key Characteristics: - Occurs because we...
Full solved answer →Sampling frame and population
Write a short note on the following a. Sampling Frame b. Non-probability sampling [5]
A sampling frame is the complete list of all units (individuals, items, or elements) in the population from which a sample is to be drawn. It serves as the practical basis for selecting a sample. Key characteristics: - It represents the accessible populatio...
Full solved answer →Simple random sampling
Define different types of random sampling technique.[10]
Random sampling is a sampling technique where each element in the population has an equal and known probability of being selected for the sample. It is an unbiased method that helps ensure the sample is representative of the population. Simple random sampli...
Full solved answer →Make Unit 6 stick
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