This document provides a checklist of topics for revising Statistics 1 for the Edexcel GCSE exam, including sampling and bias, Spearman's rank correlation coefficient, moving averages, stem and leaf diagrams, geometric mean, index numbers, frequency tables, histograms, variance, standardized scores, quality assurance, conditional probability, binomial distribution, box plots, bar charts, population pyramids, choropleth maps, and comparative pie charts.