Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

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 ...

This is a workbook (with answers) to accompany the Data Methods Club session on visualising data in R using ggplot2. - Describe the role of data, aesthetics, and geoms in ggplot functions. - Choose ...

When data is presented as a list of numbers, it can be difficult to interpret. If it is summarised in a diagram it is easier to draw conclusions and to compare with a different data set. A box plot is ...

I think ggplot is inconsistent in how it treats -inf in log scale. Below are two plots that display similar information. In the first case, I use a box plot to show the 25th, 50th, and 75th ...

Visualization methods enhance our understanding of sample data and help us make comparisons across samples. Box plots are a simple but powerful graphing tool that can be used in place of histograms to ...