Examlex
Explain how and why Jim Crow laws came to the American South.
Inferential Statistics
This is a branch of statistics that makes predictions or inferences about a population based on a sample of data taken from that population.
Null Hypothesis
A default hypothesis that there is no effect or no difference, and any observed difference is due to sampling or experimental error.
Research Hypothesis
A specific, testable prediction about the relationship between two or more variables that a study aims to prove or disprove.
Descriptive Statistics
Statistical measures that describe the results of a study; descriptive statistics include measures of central tendency (e.g., mean), variability (e.g., standard deviation), and correlation (e.g., Pearson r).
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