Examlex
One in two Americans between 15 and 21 years of age has tried cocaine.
Median
A statistical measure representing the middle value in a sorted list of numbers, effectively dividing the data set into two halves.
Mode
A measure of central tendency that is the score that occurs more often than any other.
Norm Group
A representative sample used as a benchmark for interpreting the scores of an individual on psychological tests or assessments.
Measures Of Variability
Indicators of how much scores vary in a distribution. Three types of measures of variability are the range, quartile range, and the standard deviation.
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