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Refraction of sound can occur in
Standard Deviation
A measure of the dispersion or variability within a set of data points, representing how spread out the values are from the mean.
Z-Score
Scores for the standard normal distribution measured in standard deviation units.
Standard Normal Distribution
The standard normal distribution is a special case of the normal distribution with a mean of zero and a standard deviation of one, used in z-tests.
Mean
To determine the arithmetic average, one sums up every number in the collection and divides by the number of elements in the collection.
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