Examlex
The two-step flow supports the notion that consumption styles are primarily influenced by a "trickle-down" or "trickle-up" effect from mass media.
z
In statistics, 'z' often stands for the z-score, a measure of how many standard deviations an element is from the mean.
Standard Normal Random Variable
A random variable that follows a normal distribution with a mean of 0 and a standard deviation of 1.
Area
A measure of the extent of a surface or shape, calculated in square units.
z
A standard score that indicates how many standard deviations an element is from the mean of its distribution.
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