A Data Analyst has the following dataset.

A scatter plot requires two quantitative measures on opposing axes, so Math Score should be placed on Rows and History Score on Columns. To produce one mark for each student rather than a single aggregated mark, Student ID should be placed on Detail on the Marks card. The exhibit also contains a linear model line, which is created by dragging Trend Line from the Analytics pane onto the view. A reference line is different: it marks a fixed or computed value on an axis and does not model the relationship between two measures. Adding both score fields to the Marks card is also unnecessary because their positions are already defined by the Rows and Columns shelves. These steps follow Tableau’s standard scatter-plot and trend-line workflow.