statistics · Year 2 · Suggested learning sequence
Picture graphs and tally charts
A tally chart records counts with marks. Four upright marks with a fifth across them make a bundle of five, so count bundles in fives and then add the single marks. A picture graph uses a picture for each child, or for a group of children. Always read the key first: if each picture stands for 5, skip count in fives along the row. To find how many more chose one thing than another, work out both rows and subtract.
Sample questions
The tally chart shows the favourite sport of a class. How many children chose Soccer?
- Each bundle of five is four upright marks with one line across them.
- The Soccer row has 1 bundle of 5 and 4 more: 5 + 4 = 9.
- 9 children chose Soccer.
Answer: 9
The tally chart shows the favourite fruit of a class. How many children chose Apple?
- Each bundle of five is four upright marks with one line across them.
- The Apple row has 2 bundles of 5: 5 + 5 = 10.
- 10 children chose Apple.
Answer: 10
The tally chart shows the favourite season of a class. How many children chose Spring?
- Each bundle of five is four upright marks with one line across them.
- The Spring row has 1 bundle of 5 and 1 more: 5 + 1 = 6.
- 6 children chose Spring.
Answer: 6