Examlex
According to the empirical rule,if the data form a "bell-shaped" normal distribution,percent of the observations will be contained within 2 standard deviations around the arithmetic mean.
Parabola
A U-shaped curve, represented mathematically as the graph of a quadratic function.
Vertex
In the context of geometry and graph theory, a vertex is a point where two or more curves, edges, or lines meet. In the context of quadratic functions, it is the highest or lowest point of the parabola.
Intercepts
Points where a graph crosses the axes of a coordinate system, typically identified as x-intercepts (where the graph crosses the x-axis) and y-intercepts (where it crosses the y-axis).
Parabola
A symmetric curve formed by all the points at an equal distance from a point called the focus and a line called the directrix.
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