# Glossary Term Definition voluntary response sample A

```Glossary Term
voluntary response
sample
weighted average
Definition
A sample that involves only those who want to participate.
whole numbers
x-axis
The sum of the product of the number of units and the value per
unit divided by the sum of the number of units.
The segments extending from the ends of the box in a box-andwhisker plot.
The set {0, 1, 2, 3, …}.
The horizontal number line on a coordinate plane.
x-coordinate
x-intercept
yard
y-axis
The first number in an ordered pair.
The x-coordinate at which a graph intersects the x-axis.
A customary unit of length. 1 yard = 3 feet = 36 inches
The vertical number line on a coordinate plane.
y-coordinate
y-intercept
zero exponent
zero matrix
zero pair
Zero Product Property
The second number in an ordered pair.
The y-coordinate at which a graph intersects the y-axis.
For any nonzero number a, a0 = 1.
A matrix in which every element is zero.
The result of a positive counter paired with a negative counter.
For all numbers a and b, if ab = 0, then a = 0, b = 0, or both a
and b equal zero.
zero vector
zeros
A vector with initial and terminal points at the origin.
The roots, or x-intercepts, of a function.
whisker
```