Scale - Reference Lines for Categorical Scales
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... > Scale > Reference Lines

Use to display reference lines when you create a graph with a scale displaying categorical data. By default, Minitab displays labels for each reference line. After you create a graph you can:

·    Edit the attributes of reference lines.

·    Edit the display of reference line labels.

·    Edit the font of reference line labels.

·    Edit the alignment of reference line labels.

·    Add reference lines with Editor > Add > Reference Lines.

Dialog box items

Show reference lines at Y values: Type the y-scale values for displaying reference lines.

Show reference lines at category scale positions: Type the category-scale values for displaying reference lines. Each category is assigned an integer value. From left to right, the first category is 1, the second 2, and so on. Entering a value of 1.5 draws a reference line between the first and second categories.

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