Examlex
The four-level PSSP hierarchy of needs includes
Observed Z Value
The Z Score calculated based on sample data, representing the number of standard deviations a data point is from the mean.
Sample Mean
The average value of a sample set of numbers, calculated by summing all the observations and dividing by the number of observations in the sample.
Population Average
The sum of all the values in a population divided by the number of values, representing the central tendency of the population data.
Standard Error
The standard deviation of the sampling distribution of a statistic, often used in the context of estimating the population mean.
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