Activities
Raw Data to Double Graphs
Two categories, one chart — compare boys vs girls, before vs after.
A double bar graph compares two groups side-by-side. Boys vs girls, before vs after, our team vs theirs — same categories, two bars per category.
Steps
1) Pick categories (e.g. favourite sport: football, tennis, swimming). 2) Survey two groups. 3) For each category, draw two bars touching: one for each group. 4) Add a legend so the reader knows which colour is which.
Use the SAME y-axis scale for both bars. Different scales lie about which group is bigger.