About connect lines

Connect lines join data points on a graph so that you can do the following:
  • View trends over time
  • Compare groups

Connect lines appear by default on time series plots, empirical CDF plots, and line plots. You can add a connect line to scatterplots, matrix plots, bar charts, boxplots, interval plots, and individual value plots.

Examples of connect lines

Scatterplot

This example shows monthly sales increasing over time.

Individual value plot

This example shows that the average sales for one store is slightly higher than for the other.

Add a connect line to a graph

You can add a connect line to scatterplots, matrix plots, bar charts, and histograms.

  • To add a connect line when you create a graph: in the dialog box for the graph you are creating, click Data View. On the Data Display tab, select Connect line.
  • To add a connect line to an existing graph: right-click the graph and choose Add > Data Display. Select Connect line.

Change the function of a connect line

The connection function is the way in which Minitab connects the data values for connect lines. By default, Minitab uses a straight connection, but you can change the function for a different effect; for example, to show accumulating sums by steps.

  1. Double-click the connect line and click the Options or Connect Options tab.
  2. Under Connection Function, choose one of the following:
    Straight
    Step: Center
    Step: Left
    Step: Right
  3. Click OK.

Change the connection order of a connect line

The connection order is the order in which Minitab connects points. This option is not available for all graphs.

  1. Double-click the connect line and click the Options tab.
  2. Under Connection Order, choose one of the following.
    Increasing X
    Increasing Y
    Worksheet
    Note

    When using the Worksheet connection order the graph's appearance depends on the arrangement of your worksheet.

  3. Click OK.
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