Diamond Mean Comparison Charts
Aabel NG Overview
Two-Way Diamond Mean Comparison Chart
One-Way Diamond Mean Comparison Chart
This graph category represents mean comparison charts with CI calculated from pooled error variance.
The horizontal dashed line is the overall (grand) mean.
The line through the center of each diamond is the group mean. The top and bottom diamond vertices are the respective upper and lower 95% confidence limits (CI) about the group mean.
The short horizontal lines flanking the means are overlap marks:
In groups with equal sample sizes, overlapping marks indicate that the group means are not significantly different at the 95% confidence level).
The Elements of Diamond Mean Comparison Charts
Comparying Box & Whisker (a) and Box-Percentile (b) Plots of a Variable Whose Distribution is Shown in (c)