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 ...

Scatter plots require us to visually assemble data point symbols into patterns so that we can understand the relationship between the variables. Symbols can therefore have a large impact on figure ...

Journal of the Royal Statistical Society. Series C (Applied Statistics) Graphical methods of assessing the validity of a probability model, and of estimating location and scale parameters, have been ...