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Equal Variances
An assumption in some statistical tests that the variances in the groups being compared are similar.
Normally Distributed
A symmetric probability distribution centered around the mean, demonstrating that occurrences near the mean happen more often than those at a distance.
Population Variances
A measure of how data points in a population are spread out, indicating the variability of the entire population.
Confidence Interval Estimate
An interval estimate is a range of values used to estimate a population parameter, typically defined by two numbers between which a population parameter is said to lie with a certain level of confidence.
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