Table 1 Activity 1 data visualization examples and justification for inclusion
Card | Description of key message | Type of visualization | Justification |
|---|---|---|---|
1 | Comparison of proportion (part of a whole) | 100% stacked bar chart | People have an easier time interpreting perpendicular angles and segment lengths, so 100% stacked bar graphs are a superior option over pie charts to visualize proportion [7, 8]. |
2 | Trend over time with target | Line graph with target | A line graph is the simplest way to visualize change over time and humans have an easy time judging changes in slope [7, 8, 11, 12]. Target is marked at one point to increase data-ink ratio [11]. |
3 | Comparison of proportion | Stacked bar chart | People have an easier time interpreting perpendicular angles and segment lengths, so 100% stacked bar graphs are a superior option over pie charts to visualize comparisons of proportions [7, 8]. A stacked bar is one technique used to visualize results modelled by the Lives Saved Tool (LiST) [35, 36]. |
4 | Trend over time with uncertainty | Line graph with confidence interval bars | A line graph is the simplest way to visualize change over time and humans have an easy time judging changes in slope [7, 8, 11, 12]. Error bands is one approach to visualize uncertainty [8, 34]. |
5 | Geographic performance | Maps |