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Statistics (9ST0)
10 sections available · 41 chapters available
Free Statistics (9ST0) study notes for Pearson Edexcel A Level students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
Paper 1: Data and Probability
Statistical Enquiry Cycle (SEC)
Paper 2: Statistical Inference
Experimental design
Data analysis and presentation
Numerical measures, graphs and diagrams
Outliers and comparing data sets
Correlation: Spearman and Pearson
Least squares regression and residuals
Critically assessing published visualisations
Probability
Probability laws and set notation
Tree diagrams, Venn diagrams and two-way tables
Conditional probability and independence
Bayes' theorem
Probability distributions
Discrete random variables
Binomial distribution
Normal distribution
Normal approximation to the binomial
Poisson and exponential distributions
Linear combinations of random variables
Sampling and experimental design
Population and samples
Choosing and evaluating sampling methods
Experimental design
Estimates and the central limit theorem
Inference foundations
Introduction to hypothesis testing
Tests for a binomial proportion
Confidence intervals and sample size
Type I and Type II errors and power
Significance test for a correlation coefficient
Effect size and Cohen's d
Parametric tests for means and proportions
One-sample t-test for a mean
Difference of two means with known variances
Two-sample pooled t-test
Difference between two binomial proportions
Paired tests and test selection
Non-parametric and chi-squared tests
Sign test and Wilcoxon signed-rank test
Wilcoxon rank-sum (Mann-Whitney) test
Contingency tables and tests for independence
Goodness of fit tests
Analysis of variance and statistical enquiry
One-way analysis of variance
Two-way analysis of variance without replication
Statistical Enquiry Cycle: planning and data collection
Statistical Enquiry Cycle: interpretation, evaluation and review
Interpreting technology output: calculators, spreadsheets and databases
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