Examlex
According to the In Focus box on neurodiversity, mental retardation is a condition in which an individual's IQ score is 70 or below.
Degrees of Freedom
The number of independent pieces of information available to estimate another piece of information or parameters in a dataset.
Student T-distributed
A probability distribution used in statistical analyses when the sample size is small and the population standard deviation is unknown.
Test Statistic
A calculated value from sample data used to decide whether to reject the null hypothesis in the context of a hypothesis test.
Normal Distribution
It is a probability distribution that features a symmetric alignment around the mean, emphasizing that data around the mean occur more than data at a distance.
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