AQA · Mathematics · 8300

GCSE Maths: Graphs: vertical line charts

Statistics · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths practice questions for Graphs: vertical line charts (Corbettmaths Video 148), and every card links back to the exact page it came from. Practice tests are drawn from this deck’s own cards. Source material © Corbettmaths — used with attribution.

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  1. What is a vertical line chart used to display?

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    A vertical line chart displays frequency data, showing how many times each value occurs in a dataset.

  2. In a vertical line chart, what does the height of each vertical line represent?

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    The height of each vertical line represents the frequency (how many times) that particular value occurs in the data.

  3. The ? is the value that appears most frequently in a dataset.

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    mode

  4. How do you find the mode from a vertical line chart?

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    Find the value with the tallest vertical line, as this represents the highest frequency.

  5. The ? is the difference between the highest and lowest values in a dataset.

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    range

  6. How do you calculate the median from a vertical line chart?

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    Count the total number of data points, find the middle position, then count through the frequencies on the chart until you reach that position to find the median value.

  7. How do you find the total number of data points from a vertical line chart?

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    Add up all the frequencies (heights of all the vertical lines) shown on the chart.

  8. How do you calculate the mean from a vertical line chart?

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    Multiply each value by its frequency, add all these products together, then divide by the total frequency.

  9. When calculating probability from a vertical line chart, what is the denominator?

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    The total number of data points (sum of all frequencies) in the dataset.

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