Examlex
Why is it so important that feedback data are comparative?
Z Score
A raw score that is adjusted for the mean and standard deviation of the distribution from which the raw score comes.
Population Average
The sum of all values in a population divided by the number of values in that population, also known as the mean.
Standard Error
The standard deviation of the sampling distribution of a statistic, often used to estimate the accuracy of a sample mean.
Population Standard Deviation
A measure of the dispersion or variability within a full population, indicating how much individual points differ from the population mean.
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