It is straightforward to create a bar graph or chart, Line chart, etc. in an Excel spreadsheet. When you create a graph or chart, it fetches data from the selected cells.

A pie chart, which is often used in business and mass media as a statistical chart, is very convenient to understand general information from the color and area of the area by just looking at the ...

We consider a sequence of random graphs constructed by a hierarchical procedure. The construction replaces existing edges by pairs of edges in series or parallel with probability p. We investigate the ...