Discussion topic - Assignment Example

Discussion topic affiliation Simple random sampling: This is a method of sampling technique in which every of the subset is having an equal chance of being selected. This type of sampling technique has got a main focus of eliminating biases in-group representation. For example, a research study targeting to interview 20 nurses working in a certain hospital may employ simple random sampling. The researcher will select 20 nurses randomly out of the 75 nurses in the hospital; there is no method of selecting the nurses (Kothari, 2012).

Stratified sampling techniqueThis is where a researcher divides the entire population into several subgroups or classification depending on certain parameters. Then the researcher randomly select study subjects proportionally from these different strata or subgroups. For example, if a researcher wants to know the performance rate between male and female in a nursing class he/she shall divide the population of the class into two genders, which is male and female. Then the researcher shall select proportional number randomly from the two gender groups (strata) and calculate the rate of performance.

Systematic samplingThis method of sampling techniques involves arranging the study subjects in an orderly manner and then selecting from the subjects at a stated regular interval. Even though this technique has got a random start, but it follows a sequence after the start. For example, when a nurse wants to carry out a study in a medical ward he/she can state that she/he will select a patient on every third bed from the previously selected.Cluster samplingA heterogeneous population that is having homogeneity between clusters mean is divided into different groups/clusters in this sampling technique.

Then a simple random technique is used to select the study subjects from different clusters. For example, when one wants to study knowledge of hand washing among public primary school children. They shall be divided into different proportionate clusters/groups and then simple random sampling employed to choose the required sample size from the clusters.Convenience samplingThis is a method of sampling whereby the study subjects are selected because they are easily available or volunteer. For example a nurse performing a study in a hospital, that is near his/her residential place.

ReferenceKothari, C. R. (2012). Research methodology: Methods & techniques. New Delhi: New Age International (P) Ltd.