Examlex
Quality control involves a number of activities that are of significance to the administrator.
Null Hypothesis
A statement of no difference or effect, used as the default assumption in hypothesis testing.
Alternative Hypothesis
In statistical testing, it is the hypothesis that proposes a difference or effect contrary to the null hypothesis.
Standard Error
A statistical measure that describes the accuracy with which a sample represents a population, specifically the variability of sampling distributions.
Test Statistic
A calculated value used to make a decision regarding a hypothesis test; it measures the degree of agreement between a sample data and the null hypothesis.
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