Examlex
The energy of a photon of electromagnetic radiation with a frequency of 1.5×1014 Hz is
Standard Deviation
A measure of the amount of variation or dispersion of a set of values; a low standard deviation means the values are close to the mean, while a high standard deviation means the values are dispersed over a wider range.
Standard Normal Random Variable
A random variable with a mean of zero and a variance of one, following the standard normal distribution.
Area
The measure of the extent of a two-dimensional surface or shape, expressed in square units.
Z
Often refers to a Z-score in statistics, representing the number of standard deviations a data point is from the mean.
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