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Stratified Sampling Method
To choose a stratified sample, divide the population into groups called strata and then take a...
Distributed Loads: Problem Solving
Cluster Sampling Method
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
Optimal Foraging
Multi-input and Multi-variable systems
In the absence...
Data Collection by Observations
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
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