For some graphs, Minitab displays symbols at individual data values, so that you can visually assess their patterns. For other graphs, Minitab displays symbols at summary statistics, such as the mean, median, or count. You can add these symbol displays to some graphs that don't display them by default; for example, add a mean symbol to an individual value plot or add individual symbols to an interval plot. You can edit the type, color, and size of all symbols on a graph, groups of symbols on a graph, or an individual symbol.
You can change the default attributes for symbols to use when creating new graphs.
If you have identical data values on your graph, symbols could hide behind each other. Jitter and offset symmetrically are options that move symbols slightly to reveal overlapping points.
Jitter is available for symbols on scatterplots, matrix plots, bubble plots, 3D scatterplots, individual value plots, interval plots, and boxplots; and for outliers on boxplots. Offset symmetrically is available for symbols on individual value plots, interval plots, and boxplots; and for outliers on boxplots. You can turn off jitter and offset symmetrically for all graphs that include them.
You can also specify the offset when creating the graph with command language. For example, if you want to create an individual value plot of the data in C1, use the following subcommands to specify the offset method:
Symmetrical offset is the default, so the soffset subcommand is optional.