Yesterday students explored the advantages and disadvantages of different types of graphs. Students compared a column graph to a pie graph which represented the same information.
Students noticed that:
- can show zero
- seem easier to read (opinion)
- easier to compare, same starting point – O
- can’t show zero
- can’t see the number of people surveyed unless you write the fraction next to each section
- Percentages can make graph clearer
We also discussed how graphs can be manipulated. For example in the survey question: Where do you get angry the most? the only options were yard, oval, home, and sport. We discussed other options that could have been available.