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Larger surveys and controlled studies generally employ nonprobability sampling techniques.
Observations
Individual data points or measurements collected during a study or experiment.
Histogram
A graphical representation of the distribution of numerical data, showing the frequency of data points within successive intervals.
Proportion
The ratio of a part to the whole, often expressed as a fraction, decimal, or percentage.
Symmetric
Describes a shape or distribution that is mirrored evenly around its central point.
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