Examlex
Which one of the following statements is NOT true?
Test Statistic
A statistic calculated from sample data, used to assess the plausibility of a hypothesis.
Sample Standard Deviation
The square root of the sample variance, measuring how spread out sample points are from the sample mean.
Observations
Refers to the individual data points or recorded measures of variables collected in a study.
Confidence Interval
A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter at a given confidence level.
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