The point at the very middle of the graph is called the origin, and its coordinates are (0, 0), because it's 0 units away from the center of the graph in both directions. If we draw a line on the graph, sometimes the line crosses either the x-axis or the y-axis.
Similarly, what is in the center of a tree?
In discrete mathematics, a centered tree is a tree with only one center, and a bicentered tree is a tree with two centers. Given a graph, the eccentricity of a vertex v is defined as the greatest distance from v to any other vertex. A center of a graph is a vertex with minimal eccentricity.
What is the spread of a graph?
The center is the median and/or mean of the data. The spread is the range of the data. And, the shape describes the type of graph. The four ways to describe shape are whether it is symmetric, how many peaks it has, if it is skewed to the left or right, and whether it is uniform.
What is the eccentricity of a graph?
The eccentricity of a graph vertex in a connected graph is the maximum graph distance between and any other vertex of . For a disconnected graph, all vertices are defined to have infinite eccentricity (West 2000, p. 71). The maximum eccentricity is the graph diameter. Harary, F. Graph Theory.