Examlex
In the fourth level of Maslow's hierarchy,we address our need for:
Pooled Variance
Acombined estimate of variance for two or more groups in a sample, assuming that the populations have equal variances.
Sampling Distribution
The distribution of a statistic (like the mean or variance) derived from a large number of samples drawn from a specific population.
Sample Mean Difference
The difference between the average values from two samples, used in hypothesis testing to compare two groups.
Equal-variances Test
A statistical test used to determine if two populations have the same variance.
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