When is it appropriate to use slashes on a graph?

Using slashes on a graph is appropriate specifically when the scale does not start at zero. This practice is essential to convey a more accurate visual representation of the data. When a graph doesn't start at zero, it can distort the interpretation of the data, exaggerating the perceived differences or trends. By adding slashes, the graph indicates to the viewer that a portion of the scale has been omitted, which helps maintain transparency and clarity in data interpretation.

In contrast, other scenarios do not inherently require slashes. For example, merely displaying peaks, comparing multiple datasets, or showing cumulative data can be effectively represented without the need for such indicators. Therefore, understanding when to use slashes is crucial for accurate communication of statistical information in visual formats.