Examlex
Something that is just a theory is unsupported by evidence, while a hypothesis is scientifically more valid.
National Norms
Statistical standards based on the performance of a national sample that provide benchmarks for comparing individual or group scores.
Interquartile Range
The Interquartile Range is a statistical measure of variability, defined as the difference between the upper and lower quartiles, used to describe the spread of data points in a dataset.
Mean
Mean is a statistical measure representing the average value in a set of numbers, calculated by adding all the values together and dividing by the number of values.
National Mean
The average score of a given population on a particular test or assessment.
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