GCSE Maths

Probability and statistics
revision.

Chance, tree diagrams, averages and grouped data, with the language of probability kept between 0 and 1.

Probability and statistics guides

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Each box is a full revision page. The smaller line is the search students type — not the name of the guide.

Revision guideScatter graphs and correlation

Students type: scatter graphs correlation GCSE

Open guide Revision guideCumulative frequency and box plots

Students type: cumulative frequency graph GCSE

Open guide Revision guideHistograms

Students type: frequency density = frequency / class width

Open guide Revision guideVenn diagrams and probability

Students type: P(A union B) = P(A) + P(B) − P(A intersect B)

Open guide Revision guideTree diagrams

Students type: probability tree diagrams GCSE

Open guide Revision guideAverages and data

Students type: mean from a frequency table GCSE

Open guide Revision guideProbability

Students type: probability tree diagrams GCSE

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01

Probability

Work with probabilities between 0 and 1, including tree diagrams, independent and dependent events, and the AND / OR rules.

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Averages and data

Choose and calculate mean, median, mode and range, including from frequency tables, and estimate the mean of grouped data.

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Tree diagrams

GCSE Maths tree diagrams: multiply along a branch for AND, add complete pathways for OR, and change the second fraction without replacement, with full working shown.

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Venn diagrams and probability

GCSE Maths Venn diagrams: use P(A ∪ B) = P(A) + P(B) − P(A ∩ B), fill the overlap first, and read “and”, “or” and “given that” from the regions.

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05

Histograms

GCSE Maths histograms: frequency density equals frequency divided by class width, so unequal widths still have area equal to frequency, with a full reading and drawing method.

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Cumulative frequency and box plots

GCSE Maths cumulative frequency and box plots: plot running totals at upper class boundaries, read the median and quartiles, then compare two distributions with IQR as well as average.

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Scatter graphs and correlation

GCSE Maths scatter graphs: describe positive, negative or no correlation, draw a line of best fit by eye, and interpolate inside the data range rather than extrapolating beyond it.

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Keep going

More GCSE Maths
in the same style.

GCSE Maths revision that treats method as the mark scheme: reverse percentages, compound interest, quadratic formula, completing the square, SOHCAHTOA, sine and cosine rules, vectors, tree diagrams and histograms, with working shown line by line.

All Maths revision