graphical displays of data

Graph

A picture of the data that allows glance.

Legend

The description of how each different data category is identified in the graph.

Pie Chart

A circular graph used for qualitative data that depicts parts of a whole.

Bar Graph

A graph that uses bars to represent the amount of data in each category.

Pareto Chart

A type of bar graph with the bars in descending order used for nominal data only.

Side by Side Bar Graph

A type of bar graph in which multiple samples of data are displayed side by side.

Stacked Bar Graph

A type of bar graph in which multiple samples of data are displayed stacked on top of each other.

Histogram

A bar graph displaying a frequency distribution of quantitative data.

Relative Frequency Histogram

A histogram in which the heights of the bars represent the relative frequencies of each class.

Stem and Leaf Plot

A graph of quantitative data where each data value is split into a leaf and a stem.

Key (in the context of a stem and leaf plot)

The legend for a stem and leaf plot.

Dot Plot

A graphical depiction of a dataset in which each data value is represented by dots above a number line.

Heat Map

Any graph that depicts data using color to indicate the value of a category or area.

Line Graph

A graph that uses points to represent data values over time and joins them with line segments.