Statistics Toolbox

Statistical Plots

Introduction

The Statistics Toolbox adds specialized plots to the extensive graphics capabilities of MATLAB.

• Box plots are graphs for describing data samples. They are also useful for graphic comparisons of the means of many samples (see One-Way Analysis of Variance (ANOVA)).
• Distribution plots are graphs for visualizing the distribution of one or more samples. They include normal and Weibull probability plots, quantile-quantile plots, and empirical cumulative distribution plots.
• Scatter plots are graphs for visualizing the relationship between a pair of variables or several such pairs. Grouped versions of these plots use different plotting symbols to indicate group membership. The gname function can label points on these plots with a text label or an observation number.

The plot types are described further in the following sections:

• Box Plots
• Distribution Plots
• Scatter Plots

Reconstructing a Map from Inter-City Distances

Box Plots