Zero The number
that divides the positive and negative numbers; it is also
called the identity element for addition; that is, it satisfies
the property that x + 0 = 0 + x = x
for all numbers x . Zero matrix
A matrix with all entries equal to 0. Zero multiplication
If a is any real number, then a(0) = (0)a
= 0. Zero-product rule
If a(b) = 0, then either a = 0 or b
= 0. -score
A measure to determine the distance (in terms of standard
deviations) that a given score is from the mean of a distribution.
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