Examlex
Nonresponse bias causes problems because it means that the sampling units that participated are different from those that did not participate.
Hyperbola
A type of smooth curve lying in a plane, defined by its geometric properties or by equations that are not necessarily of the second degree. Specifically, it refers to a conic section that is not a circle, ellipse, or parabola.
Center and Vertices
Terms related to conic sections; the center is a central point of the shape, while vertices are points where the curve intersects its principal axis.
Graph Equations
The process of plotting the solutions to an equation on a graph, typically within a coordinate system.
System of Equations
A set of two or more equations with the same set of variables, which are solved simultaneously to find common solutions.
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