Examlex
Which is a radiologic procedure that shows areas of abnormal metabolism in the brain related to dementia and Alzheimer's disease?
Matched Pairs
An experimental design where each subject is paired with another subject that has similar characteristics, but one receives the treatment and the other does not.
Pooled Variance
A method to estimate the variance of two or more populations that assumes the populations have the same variance but different means.
Test Statistic
A value calculated from sample data during a hypothesis test that is used to determine the probability of observing the sampled data under the null hypothesis.
Population Variances
A measure of the dispersion or spread of a set of data points in a population; it quantifies how much the data points deviate from the mean of the population.
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