Comparative and composite bar charts
The Maths Habit Handout to print
Ice creams sold by two cafés. Which café did better?
| June | July | August | |
|---|---|---|---|
| Café A | 12 | 15 | 9 |
| Café B | 8 | 10 | 20 |
Either, with a reason: B sold more in total, A sold more in two of the months
- Qualitative data
- Described in words.
- Discrete data
- Counted. It can only take set values.
- Continuous data
- Measured. It can take any value in a range.
Qualitative, discrete or continuous?
Qualitative, discrete or continuous?
Qualitative, discrete or continuous?
Qualitative, discrete or continuous?
- Comparative bar chart
- Bars side by side, to compare two groups.
Draw a comparative bar chart. Which has the biggest difference? Rugby
| Sport | Boys | Girls |
|---|---|---|
| Rugby | 10 | 5 |
| Netball | 4 | 8 |
| Dance | 6 | 3 |
Draw a comparative bar chart. Which café sold more? Café B
| Month | Café A | Café B |
|---|---|---|
| Jan | 6 | 8 |
| Feb | 9 | 5 |
| Mar | 4 | 7 |
Draw a comparative bar chart. Which has the biggest difference? Rugby
| Sport | Boys | Girls |
|---|---|---|
| Rugby | 10 | 5 |
| Netball | 4 | 8 |
| Dance | 6 | 3 |
Draw a comparative bar chart. Which shop sold more? Shop A
| Day | Shop A | Shop B |
|---|---|---|
| Mon | 10 | 7 |
| Tue | 6 | 9 |
| Wed | 8 | 3 |
- Composite bar chart
- Each bar split into parts. The top of the bar is the total.
Draw a composite bar chart. Which day had the most tickets? Sun
| Day | Adult | Child |
|---|---|---|
| Fri | 4 | 6 |
| Sat | 7 | 5 |
| Sun | 5 | 8 |
Draw a composite bar chart. How many journeys on Wednesday? 13
| Day | Bus | Train |
|---|---|---|
| Mon | 8 | 3 |
| Tue | 5 | 6 |
| Wed | 9 | 4 |
Draw a composite bar chart. Which day had the most tickets? Sun
| Day | Adult | Child |
|---|---|---|
| Fri | 4 | 6 |
| Sat | 7 | 5 |
| Sun | 5 | 8 |
Draw a composite bar chart. How many drinks on Friday? 45
| Day | Hot | Cold |
|---|---|---|
| Thu | 20 | 15 |
| Fri | 35 | 10 |
| Sat | 15 | 30 |
Draw a comparative bar chart. Which has the biggest difference? Rugby
| Sport | Boys | Girls |
|---|---|---|
| Rugby | 10 | 5 |
| Netball | 4 | 8 |
| Dance | 6 | 3 |
Draw a comparative bar chart. When did the Hawks score more? Match 1
| Match | Lions | Hawks |
|---|---|---|
| Match 1 | 3 | 5 |
| Match 2 | 6 | 2 |
| Match 3 | 4 | 4 |
Draw a composite bar chart. Which day had the most tickets? Sun
| Day | Adult | Child |
|---|---|---|
| Fri | 4 | 6 |
| Sat | 7 | 5 |
| Sun | 5 | 8 |
Draw a composite bar chart. Which month had the fewest books sold? Jun
| Month | Shop | Online |
|---|---|---|
| Apr | 15 | 20 |
| May | 30 | 10 |
| Jun | 5 | 25 |
Draw a composite bar chart. Which day had the most tickets? Sun
| Day | Adult | Child |
|---|---|---|
| Fri | 4 | 6 |
| Sat | 7 | 5 |
| Sun | 5 | 8 |
Draw a composite bar chart. How many more hot than packed on Mon? 8
| Day | Hot | Packed |
|---|---|---|
| Mon | 14 | 6 |
| Tue | 8 | 10 |
| Wed | 12 | 4 |
The same table, drawn two ways. Which chart shows each answer more clearly?
More cars or vans each day: comparative The total each day: composite
Answer sheet
A composite bar is 40 tall. Its bottom part is 15. How tall is the top part?
25Height, eye colour, number of pets, shoe size, time. Which are continuous?
Height and time
Pages in a book: qualitative, discrete or continuous?
DiscreteWhich day has the biggest difference between the shops?
WedHow many child tickets were sold on Sunday?
8