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Frequency and Tally Charts
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Frequency and Tally Charts

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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!

1

Tally charts use vertical strokes for numbers

Each stroke represents 11. To make it easier to read, every fifth object is a diagonal stroke. Therefore, each group with a diagonal stroke represents 55

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2

What does the tally represent?

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3

The tally shows 1212

The first two groups represent 55 each, while the two tallies after indicate a further 22. 5+5+2=125+5+2=12, so the tally represents 1212

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4

What does the tally represent?

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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.

1

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.

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2

How many people said their favourite colour was blue?

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Complete this sentence: Tallies come in groups of _____

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