To plot a table of means following an analysis of variance, click Further Output then click Means Plots.

For a one-way table you must supply the factor for the x-axis, and for a two-way table you must supply the grouping factor as well. If the x-axis factor and grouping factor are left blank the first two-way table of means in the analysis is plotted (i.e. for the first two-way interaction in the treatment factors), or the first one-way table if there are no two-way tables. For multi-way tables the means can be displayed in trellis plots or using page factors to draw graphs on different pages.

## Available data

This lists factors that can be used for the x-axis, Groups or Trellis groups. Double-click a factor name to copy it to the current input field or type the name.

## Factor for x-axis

Specifies the factor to be plotted on the x-axis. Corresponding y values are the means at each level of the x-axis factor.

## Groups

If there are two or more treatment factors you can specify factors to use for additional classification on the plot. The means are calculated for each combination of x-axis factor and Groups, and a different colour is used when plotting Means, Lines and Data for the different groups, according to the choice of Method. For multi-way tables a list of factors separated by commas or spaces can be supplied to display the means for each combination of the grouping factors.

## Trellis groups

If there are several treatment factors you can specify factors to define a trellis plot where a different plot is produced for each level of the factor. You can supply a list of factors, separated by commas or spaces, to display a plot for each combination of the trellis grouping factors.

## Page groups

If there are several treatment factors you can specify factors to define combinations of levels to be plotted on different pages. You can supply a list of factors separated by commas or spaces to display a plot for each combination of the page grouping factors.

## Method

This controls how the means are displayed.

Means | Represents each mean by a point |

Lines | Also plots lines between the means |

Data | Plots the observed data values with lines between the treatment means |

Bar chart | Plots the treatment means as a bar chart |

## Standard error bar

The plot includes a bar to indicate the variability of the means. This option can be used to control which standard error is used for the bar.

Differences | Average standard error of difference |

Means | Average effective standard error for the means. By default, a single bar is produced for the graph. However, you can specify to plus and minus the effective standard error around every mean by selecting the Plot around every mean option. |

LSDs | Average least significant difference. You can specify the significance level for the LSD in the LSD significance level option where the value is supplied as a percentage. |

## Action Icons

Pin | Controls whether to keep the menu open when you click Run. When the pin is down , then the menu will remain open, otherwise when the pin is up , the menu will close. | |

Clear | Clear all edit and list boxes. | |

Help | Help about this menu. |

## See Also

- Graphics Plot Table menu
- AGRAPH procedure for plotting means