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z score

z tablethe number of standard deviations from the mean a data point is. Also known as a standard score

z-interceptThe table of probabilities assigned to a z-score

zeroA point at which a graph intersects the z-axis.

zero coupon bondA number with no size or quantity. Neither positive or negative.

0

zero matrixA bond where the face value is paid at the time of maturity. No coupons are paid.

zero multiplication propertyA matrix for which all elements are equal to 0.

zero of a functionThe product of any number and zero is zero

A * 0 = 0

zero slopeA value of x which makes a function equal to 0. Note: A zero may be real or complex.

zero vectorThe slope of a horizontal line. A horizontal line has slope 0 because all its points have the same y-coordinate.

zetaA vector with magnitude (length) zero.

zodiac signA letter of the greek alphabet used for math notation.

Ζ ζ

an area of the sky that extends approximately 8° north or south of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year