Examlex
A child with IDD who is receiving intensive instruction in a special learning environment would be at which tier of the RtI model?
Z-test
A Z-test is a statistical test used to determine whether two population means are different when the variances are known and the sample size is large.
Population Means
The average of a set of measurements, scores, or values for the entire population.
Pooled Variance
An estimate of the common variance of two or more groups that is weighted by the degrees of freedom of each group.
Standard Error
The standard deviation of the sampling distribution of a statistic, often used to quantify the accuracy of a sample mean.
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