Minitab also performs two tests that provide information on non-random variation due to trends, oscillation, mixtures, and clustering - patterns that suggest the variation observed is due to special causes. Click on the Legend and press on your keyboard. Minitab's run chart plots individual observations in the order they were collected, and draws a horizontal reference line at the median. In Categorical variables for grouping, enter Group.ġ0. Choose Graph > Scatterplot > With Connect and Groups.ĥ. Note: If you have many rows of data, see below for an easier method to create the grouping column.Ģ. Create a grouping column, (called Group in this example), that has missing values for the rows in the Data column with missing values and unique integers between each missing value. If the data are not evenly spaced, use a grouping variable with Graph > Scatterplot > With Connect and Groups.įor example, suppose you have the following data:ġ. If the data are evenly spaced, use Graph > Time Series Plot.
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