Unit 6 · Collecting data

Video lessons

8 lessons from established maths channels, all taught by native English speakers and all matched to a specific section of Unit 1. Every video ID was verified, so none of these links are broken.

CorbettmathsMath Antics Math with Mr. JKhan Academy Mathsaurus
This is the one page that needs an internet connection. The players below stream from YouTube. If you are working offline, use the printable PDFs on the downloads page instead, and come back to the videos later.

6.1 Conducting an investigation7 videos

Quantitative and Qualitative Data

British corbettmaths

The first split: is the data a number at all? Qualitative is what Stage 7 calls categorical.

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Discrete and Continuous Data

British corbettmaths

The second split, with the test that matters: did you count it or measure it?

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How to Make a Frequency Table (qualitative data)

American Math with Mr. J

Building the table from raw data, tally column included.

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How to Read a Frequency Table (qualitative data)

American Math with Mr. J

Reading totals and comparisons off a finished table — exactly the fluency questions in group A.

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How to Make a Grouped Frequency Table

American Math with Mr. J

Choosing class intervals for continuous data so they neither overlap nor leave gaps.

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How to Read a Frequency Table (grouped data)

American Math with Mr. J

Answering “how many are below 160 cm?” from a grouped table.

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Types of Data — worked answers

British stretchcorbettmaths

Full solutions to a mixed classification exercise. Try them yourself first.

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6.2 Taking a sample1 videos

Math Antics - Mean, Median and Mode

American stretchmathantics

Where the data goes next. Watch it now to see why a fair sample matters before you average anything.

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All links in one tablecopy-friendly

SectionVideoChannelAccentLevel
6.1Quantitative and Qualitative DatacorbettmathsBritishcore
6.1Discrete and Continuous DatacorbettmathsBritishcore
6.1How to Make a Frequency Table (qualitative data)Math with Mr. JAmericancore
6.1How to Read a Frequency Table (qualitative data)Math with Mr. JAmericancore
6.1How to Make a Grouped Frequency TableMath with Mr. JAmericancore
6.1How to Read a Frequency Table (grouped data)Math with Mr. JAmericancore
6.1Types of Data — worked answerscorbettmathsBritishstretch
6.2Math Antics - Mean, Median and ModemathanticsAmericanstretch