Take the example of a researcher looking to understand smartphone usage in Germany. In this case, the cities of Germany will form clusters. This sampling method is also used in wars and natural calamities to draw inferences about a population, where collecting data from every individual residing ...
By using cluster sampling, researchers can collect larger samples than other methods because the groups simplify and reduce data collection costs. Clustering effectively concentrates the subjects into smaller regions, allowing the researchers to sample more of them. For example, if they use schools as ...
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You should use this method when it is infeasible or too expensive to test the entire cluster. Example: Multistage samplingInstead of collecting data from every seventh-grader in the selected schools, you narrow down your sample in two additional stages: From each school, you randomly select a ...
What is the sampling population for this study? Do you think this sampling procedure results in a representative sample of households with children? Why‚ or why not? Solution: This is a cluster sample because all the elements within the clusters are selected. (Example: All Premium Sampling...
At the second stagewithin clusters, one method assumes the selectionof an equal number of persons while the secondmethod assumes the sampling of an equal numberof households.As an example, we will be studying twosmall surveys of smoking behavior. Specifically,we will be measuring the prevalence ...
Example 1A botanist divides a field into 1000 equal-size plots. In each plot, he plants 100 clover seeds; and ultimately, each seed sprouts. The botanist randomly selects 20 plots and counts the number of four-leaf clovers in each sampled plot. His findings appear below:...
Step 1: Choose an analysis method. The first step of cluster analysis is usually to choose the analysis method, which will depend on the size of the data and the types of variables. Hierarchical clustering, for example, is appropriate for small datasets, while k-means clustering is more appr...
Additionally, when you are navigating in the Browser Panel (for example, you click on a specific Folder or field tree item), the document list contains documents that are not necessarily in the cluster set you selected. A Document Breakdown pie chart is present for both types of visualizations...
Example Value Equipment Room (*) Yes Equipment room where a node is located. The value is a string of 1 to 64 characters. Data equipment room 1 Cabinet Group (*) Yes Cabinet group to which a node belongs. The value is a string of 1 to 64 characters. ...