Year 9 · Maths
Understand variables, data representations, measures and spread in Year 9 Maths
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Focus on comparing averages and spread of data. Open support for “Calculate Percentiles and Quartiles”, then explain the idea in your own words.
Year 9 learners practise comparing averages and spread of data.
The activities include Calculate Percentiles and Quartiles, Compare Distributions of Grouped Data Using Averages, Compare Distributions Using Averages, and related practice. The checked support below includes video, worksheet, teaching. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.
Activities covered
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- Calculate Percentiles and Quartiles — support from YouTube — Whats Up Dude
- Compare Distributions of Grouped Data Using Averages — support from Oak National Academy
- Compare Distributions Using Averages — support from Oak National Academy
- Compare Distributions Using Measures of Spread — support from Oak National Academy
- Find Mean, Median and Mode from Frequency Charts — support from YouTube — corbettmaths
- Estimate the Median for Grouped Data — support from YouTube — ExamSolutions
- Understand the Suitability of Measures in Different Scenarios — support from Oak National Academy
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Watch it explained
watch a video explanation
What Are And How To Calculate Quartiles, The Interquartile Range, IQR, And Outliers Explained
Best for: a clear explanation before you practise
Comparing summaries of data
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Evaluating the range
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Means from Frequency Tables - Corbettmaths
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Estimating Median, Quartiles and Percentiles from a Grouped Frequency Table
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Analysing different statistical representations
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Learn it properly
lessons and teaching pages
Graphical representations of data: lesson sequence
Best for: worked examples and step-by-step teaching
Numerical summaries of data: lesson sequence
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Practise it
questions and activities to try
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Print and finish
worksheets away from the screen
Averages
Best for: pencil-and-paper practice away from the screen
Median from Grouped Data Practice Questions
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