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If the differences between group means are large enough, then:
Z-Score
Another term for standard score, indicating the number of standard deviations a data point is from the mean of its distribution.
Standard Deviations
A statistical measure that quantifies the amount of variation or dispersion of a set of data values.
Standard Normal Distribution
A bell-shaped probability distribution characterized by a mean of zero and a standard deviation of one, used in many areas of statistical analysis.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, indicating how much the values in a data set vary from the mean.
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