All the formulae you need to know for GCSE Statistics.

Detailed revision notes on Chapter 8 - Probability Distributions for the Edexcel GCSE (9-1) Statistics Course.

Detailed revision notes on Chapter 7 - Index Numbers for the Edexcel GCSE (9-1) Statistics Course.

Detailed revision notes on Chapter 6 (Probability) for the Edexcel GCSE (9-1) Statistics course.

Detailed revision notes on Chapter 5 (Time Series) for the Edexcel GCSE (9-1) Statistics course.

Detailed revision notes on Chapter 4 (Scatter Diagrams and Correlation) for the Edexcel GCSE (9-1) Statistics course.

Detailed revision notes, with examples, on Chapter 3 (Summarising Data) for the Edexcel GCSE (9-1) Statistics course.

Exam Questions and mark scheme on Tree Diagrams for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification.

Exam Questions and mark scheme on Venn Diagrams for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on completing Venn diagrams, estimating probabilities from Venn diagrams, assessing deductions from a Venn diagram and conditional probability.

Exam Questions and mark scheme on Questionnaires for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on commenting on the suitability of questions, designing questions, knowing the advantages of a pilot survey and using the random response method for sensitive questions.

Exam Questions and mark scheme on Hypotheses for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification.

Exam Questions and mark scheme on Scatter Diagrams for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on correlation, line of best fit, mean points and equation of regression line.

Exam Questions and mark scheme on Histograms for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on calculating and using frequency density to draw and complete histograms, and interpet and compare data sets used in histograms.

Exam Questions and mark scheme on Skewness for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on determining skewness from data by inspection and calculation as well as interpreting a distribution of data in terms of skewness.

Exam Questions and mark scheme on Box Plots for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include questions on drawing box plots, working out median/IQR from box plots, comparing distributions and calculating outliers.

Exam Questions and mark scheme on Cumulative Frequency for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification and include CF Step Polygons for discrete data and CF Curves for continuous data.

Exam Questions and mark scheme on comparing using measures of dispersion for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification. Questions are based on campring different data sets using appropriate measurs of spread: range, IQR, percentiles and standard deviation.

Exam Questions and mark scheme on Standardised Scores for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification.

Exam Questions and mark scheme on calculating Standard Deviation for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics specification.

Exam Questions and mark scheme on Time Series for Edexcel GCSE (9-1) Statistics. All questions are from the Edexcel GCSE Statistics new specification and include both higher and foundation questions covering trend lines, moving averages, seasonal variations and predicted values. Foundation Qs - Q1 ,Q2, Q3, Q4, Q6 Higher Qs - Q5, Q7 , Q8, Q9, Q10, Q11