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The Confidence Interval Formula for Sample Size Is the Same

question 32

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The confidence interval formula for sample size is the same as the sample size formula for a mean.


Definitions:

Standard Deviation

Standard deviation is a statistical measure that quantifies the amount of variation or dispersion of a set of data values from the mean.

Stanine

A method of scaling test scores on a nine-point standard scale, where a higher stanine score indicates better performance.

Cognitive Ability Test (CogAT)

A standardized test designed to measure students' reasoning abilities in the areas of verbal, quantitative, and non-verbal (or spatial) reasoning.

Standard Error of the Estimate

A statistical measure that indicates the accuracy with which a sample represents a population.

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