Examlex
Constant controls are the most important of the preliminary level controls?
Equal Variances
A condition in which two or more groups have the same variance, often assumed in parametric tests comparing groups.
Pooled Two-sample T Procedure
A statistical method used to test if there is a difference between the means of two populations, assuming equal variances.
Alternative Hypothesis
A statement in hypothesis testing that is directly tested and suggests there is a statistically significant effect or difference.
Standard Error
A statistic that measures the accuracy with which a sample distribution represents a population by describing the dispersion of sample means around the population mean.
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