Examlex
Which of the following states seceded from the Union after Lincoln was elected but before he came to office?
Sample Mean
The average of a set of observations or values taken from a sample of a population.
Population Mean
The average of all the values in a population, representing the central tendency of the population.
Alpha Level
The threshold of significance in hypothesis testing, below which the null hypothesis is rejected, commonly set at 0.05.
Null Hypothesis
A hypothesis that suggests there is no significant difference or effect, used as a starting point in hypothesis testing.
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