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.

Box-and-whisker plots are a really effective way to display lots of information. These plots contain the range, interquartile range, median, lower value, upper value, lower quartile and upper quartile ...

The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first understand ...

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 ...