AQA · Mathematics · 8300
GCSE Maths: Averages: mode (frequency table)
Statistics · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths practice questions for Averages: mode (frequency table) (Corbettmaths Video 395), 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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How do you find the mode from a frequency table?
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Pick the value (or category) with the highest frequency — not the highest frequency itself.
Can the mode be a non-numerical category, such as a colour?
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Yes. The mode is simply the most frequent value, so it works for categories like colours or travel methods.
The value that appears most often in a data set is called the ?.
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mode
How do you work out the range from a frequency table?
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Subtract the smallest value with a non-zero frequency from the largest value with a non-zero frequency (ignore the frequencies themselves).
How do you find the total of all values from a frequency table?
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Multiply each value by its frequency and add up the products.
What is a modal class interval in a grouped frequency table?
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The class interval (group) with the highest frequency.
Why can grouped data only give a modal class, not an exact mode?
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The individual values are not known — only which interval each falls in — so you can only identify the most frequent interval.
How does adding a value inside the existing range affect the range?
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It remains the same — the range only changes if the new value is smaller than the minimum or larger than the maximum.
When does adding one new data value change the mode?
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Only when the new value's frequency becomes the highest (or ties for highest); otherwise the mode remains the same.
How do you find the fraction of data values above a given boundary from a frequency table?
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Add the frequencies of the intervals above the boundary and divide by the total frequency.
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