A chart is a 2-d plot used to display one or more data sets represented as histograms, bar graphs, surface charts, or simple plots of 2-d data. Charts have one x-axis, one or two y axes, data sets, a title, and an optional legend.
See
Modifying Chart Attributes
Modifying the X-Axis
Modifying the Y-Axis
Modifying the Second Y-Axis
Attributes of a Data Set