Examlex
The standard deviation of the sample data 13,14,17,and 20 equals:
Chi-squared Distribution
A statistical distribution that is used primarily in hypothesis testing and is derived from the sum of squared standard normal deviates.
Proportion
A statistical measure that indicates the fraction of the total number of items in a certain category or characteristic.
Two-tail Test
A statistical test that is used to determine if there is a significant difference between a sample and a particular population mean, where the critical region is split between both tails of the distribution.
Population Proportion
A measure that describes the percentage of a specific characteristic in a population.
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