*Quartiles* are quantiles (also percentiles) that divide the data into approximately four equal parts. A *box and whisker plot* is a graph showing the data distribution using the *five-number-summary* ...

Data visualization is a powerful tool in data analysis that allows you to see the distribution of your data in a clear way. One of the most common graphs in data analysis is the box and whisker plot.

Microsoft Excel, a spreadsheet and data analysis program, is available as a stand-alone program or as a component of the Microsoft Office productivity suite. Excel 2007 included a number of new ...

A chart is a graphical representation of data that helps your audience to understand your information easily; charts make comparisons in your data and analyze the trends or patterns in data sets.

Data visualization has become easier and easier with the advent of computers and increased access to data. Excel has been the default for crunching numbers across industries but there have been a few ...

Treemap has nine variations, all of which show a hierarchical view of the target data and how the sections of that hierarchy compare in size to each other. The main branches of the tree are displayed ...

Forbes contributors publish independent expert analyses and insights. I help people communicate data clearly with graphs. Last week’s post, “A Histogram is NOT a Bar Chart ”, explained that bar charts ...