Examlex
How might a family respond to visual impairment of a family member?
Random Sample
A sample in which each member of the population has an equal probability of being selected, aiming for a representative subset.
Standard Error
A statistical measure that indicates the accuracy of a sample mean by estimating the dispersion of sample means around the population mean.
Statistic
A numerical measure that describes a characteristic of a sample, which is often used to estimate the corresponding parameter in the population.
Unknown Parameter
A value in a statistical model that must be estimated from the data because it is not known beforehand.
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