Which feature allows you to visualize two different data sets on one graph in Tableau?

The dual-axis feature in Tableau enables you to visualize two different data sets on a single graph by layering them over each other, typically using two different axes on the same chart. This is particularly useful when the two data sets have different scales or units of measurement, as it allows for better comparison and analysis of trends between the two sets.

By utilizing dual axes, you can assign one data set to a primary axis (typically the left side of the graph) and the other to a secondary axis (on the right side). This method enhances clarity in visual representation, as it allows distinct graphs to maintain their own scale while still aligning them in a shared timeline or categorical axis.

The other techniques mentioned, such as chart overlay, layering, or visual mix, are not standard terminology in Tableau for the specific function of combining data sets with separate axes on one graph. While Tableau may support various forms of visualization, the dual-axis feature is the most accurate and widely recognized method for achieving this specific task.