IGCSE Maths: Statistics

Overview

Statistics covers data collection, representation, and analysis. Core students work with basic averages and charts, while Extended students tackle cumulative frequency curves, histograms with unequal class widths, and interpreting complex data sets.

Core Syllabus Topics

• Mean, median, mode, range
• Bar charts and pie charts
• Pictograms and frequency tables
• Stem-and-leaf diagrams

Extended Syllabus Topics

• Cumulative frequency curves
• Box-and-whisker plots
• Histograms (unequal class widths)
• Scatter diagrams and correlation
• Quartiles and interquartile range

Common Mistakes to Avoid

• Using frequency instead of frequency density for histograms
• Misreading cumulative frequency graphs
• Confusing mean of grouped data with raw data mean
• Not plotting cumulative frequency at upper class boundaries