In some cases it is, e.g. Microsoft Excel graphs.
Axes, title, Key (if needed, also called a legend), Axis labels
The minimum requirement are data and a key (or legend). No axes are required if the graph is a pictogram.
The graph that indicates what the bars or lines represent is called a "legend" or "key." It provides information about the data categories, units, or variables being represented in the graph. Legends help viewers understand the meaning of different colors, patterns, or symbols used in the graph, ensuring accurate interpretation of the data.
Line graph
a graph key is when one end of the graph goes into a nother graph and makes baby graphs.
It is the legend or key.
A legend.
It is called the key or legend.
a key or legend.
Axes, title, Key (if needed, also called a legend), Axis labels
The minimum requirement are data and a key (or legend). No axes are required if the graph is a pictogram.
legend>
legend>
The key of the map explains all the symbols used on the map.
The legend, or key.
It is the key or legend.
It is the legend or key.