Skip to content

Conquer Your A Levels

Subjects Topic Questions Past Papers Notes Videos Blog

Sign in Get started

Conquer Your A Levels

Focused CAIE AS & A Level revision: topic questions, notes, videos, past papers and mark schemes.

Learn

Subjects Topic Questions Past Papers Notes Videos

More

Blog Search About Contact

Connect

YouTube Connect Settings

© 2026 Conquer Your A Levels. Built for students.Free core revision · optional Plus features

Notes MathematicsProbability & Statistics 1

Mathematics 9709

Probability & Statistics 1 — Revision Notes

Hover a chapter to open it, then pick a topic to start reading.

1.1Types of data & stem-and-leaf
1.2Histograms
1.3Cumulative frequency graphs

2.1Mode and the modal class
2.2The mean
2.3Coded data
2.4The median & choosing an average

3.1Range, IQR & box plots
3.2Quartiles from a cumulative frequency graph
3.3Standard deviation
3.4Working from totals & combining sets
3.5Coded data: shift & scale

4.1Probability basics
4.2The addition law (OR)
4.3Multiplication & independence (AND)
4.4Conditional probability
4.5Dependent events & trees

5.1Factorials & the 'ways' mindset
5.2Arranging in a line
5.3Arrangements with restrictions
5.4Arranging r of n (ⁿPᵣ)
5.5Permutations vs combinations
5.6Combinations in probability

6.1Building a probability distribution
6.2Expectation & variance

7.1The binomial distribution
7.2Binomial mean & variance
7.3The geometric distribution
7.4Geometric mean & mode

8.1The standard normal & z-table
8.2Standardising: z = (x − μ)/σ
8.3Finding μ and σ from probabilities
8.4Normal approximation to the binomial

Mathematics Probability & Statistics 1 — Revision Notes · Conquer Your A Levels