Statistics

Grade Ladder: Probability and Statistics: Notes, Practice Questions & Worked Solutions

Ahmed / October 9, 2026

18 questions climbing from grade 1 to grade 9 across the probability and statistics content of the Edexcel GCSE, two at each grade. Each question shows…

Statistics

Sampling, Frequency Polygons and Time Series: Notes, Practice Questions & Worked Solutions

Ahmed / October 9, 2026

Before you can draw conclusions from data, you need a fair sample. Then you need the right diagram to show it. This page covers sampling and bias,…

Statistics

Box Plots and Comparing Distributions: Notes, Practice Questions & Worked Solutions

Ahmed / October 9, 2026

A box plot squeezes a whole data set into five numbers. The comparison question is a reliable 2–4 marks if you remember the formula: compare an average…