Examlex
The University of Michigan's "Monitoring the Future" research group has been surveying 6,000 different students a year for nearly 40 years. What type of research design is this?
Critical Value
The threshold value that a test statistic must exceed to reject the null hypothesis in a statistical test, determined by the significance level of the test.
Significance Level
The probability of rejecting the null hypothesis in a statistical test when it is actually true, often denoted by alpha (α) and typically set at 0.05, 0.01, etc.
Sample Observation
An individual data point collected from a sample that is used for analysis and making inferences about the population.
Population Variance
A measure of the dispersion of all data points in a population from the population mean, indicating the diversity within the population.
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