Examlex
For any distribution,the number of values above the mean and below it is the same.
Cluster Sampling
A sampling technique where the population is divided into clusters, and a random sample of these clusters is then selected for analysis.
Simple Random Sampling
A sampling method where each member of a population has an equal chance of being selected.
Standard Deviation
An indicator of the degree of spread or divergence among values in a dataset.
Standard Error
A measure of the variability (spread) of sample means around the population mean.
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