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Frequency and Tally Charts
Frequency and Tally Charts
Tally charts are a quick and easy way to keep count of something.
When running a questionnaire or survey to collect data, we must have an easy way to record data. We can't rely on memory to remember the favourite colours of 100 people in a survey!
Tally charts use vertical strokes for numbers
Each stroke represents 1. To make it easier to read, every fifth object is a diagonal stroke. Therefore, each group with a diagonal stroke represents 5
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/XM81ofsT02nS0GabmRzq.png)
What does the tally represent?
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/hocbyuMlQMeL7BBbKH3P.png)
The tally shows 12
The first two groups represent 5 each, while the two tallies after indicate a further 2. 5+5+2=12, so the tally represents 12
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/hocbyuMlQMeL7BBbKH3P.png)
What does the tally represent?
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/QGcvRM1VQdibJN0jUpKQ.png)
Once we have used the tally count, it is useful to transform this into numbers, as this makes reading the frequency much easier. We can use a frequency table to display this.
This table shows a group's favourite colours
The tallies in the middle section are translated to numbers in the right-hand column, and represent the number of people with that favourite colour.
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/eVD9M30lTa6aFq9qSALQ.png)
How many people said their favourite colour was blue?
![](https://cdn.hejalbert.se/teen/blocks-images/en_GB/eVD9M30lTa6aFq9qSALQ.png)
Complete this sentence: Tallies come in groups of _____