Why do this problem?
is a great way for children to interrogate data and really think about possible reasons for trends, rather than just accepting conclusions without digging deeper. They have an opportunity not just to interpret data, but to collect data for a purpose (comparison).
You could look at the table as a whole class and encourage learners to discuss the questions in groups which would be a good precursor for them conducting their own survey. Encourage presentation of their findings in a variety of different ways so that you can build a display in the classroom.
Once their results are displayed (perhaps several days later), you can gather the group as a whole to look at them collectively. By printing off a copy of the table in the problem as well, you could add comments from the children to the display as they make comparisons.
Census at School is a fantastic resource for teaching data handling. You can download raw data as well as tables such as the one in this problem and there are suggestions for classroom activities (for example using spreadsheets). Do remember that your class or school can take part and contribute to the growing data sets.
How will you collect your own data?
Will you ask everyone individually?
How will you record what they say?
How many people are you going to ask?
How will you work out the percentage of people using each method of travel?
Children could be encouraged to interrogate other surveys in newspapers or magazines in a similar way. You could collect some suitable articles for them to look at and challenge them to ask questions about the data presented.
Software packages will help pupils present their findings in a number of different ways.