Stacked bar charts
You learn to read a bar chart in which each bar is made of two parts.
How to work it out
- Each bar is made of two parts, one on top of the other.
- Read the bottom part straight from the scale.
- The top part starts where the bottom part stops: work out the top minus the bottom.
- The top of the whole bar is the total.
How many children cycled on Tuesday? The bottom part (walking) goes up to 6, the whole bar up to 14.
- The top part is cycling.
- It does not start at 0 but at 6, where the bottom part stops.
- It ends at 14.
- Work out the top minus the bottom: 14 − 6 = 8.
- So 8 children cycled.
More examples
How many children walked on Tuesday?
- The bottom part starts at 0: read off its top.
- That is 6.
How many children came on Tuesday altogether?
The top of the whole bar: 14.