Examlex
As of 2014, how many states allow philosophical or personal belief exemptions?
Sample Standard Deviation
A measure of the amount of variation or dispersion of a set of values in a sample.
Null Hypothesis
A default hypothesis that there is no statistical significance in a set of given observations, aiming to be either rejected or not rejected based on test results.
Standard Error
The standard deviation of the sampling distribution of a statistic, most commonly the mean.
Test Statistic
A calculated value used in statistical hypothesis testing to determine whether to reject the null hypothesis, based on the difference between observed data and what is expected under the null hypothesis.
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