IB Math AI Worksheet SL 4.3 - Summary Statistics

This IB Math AI SL 4.3 – Summary Statistics resource develops students’ understanding of how numerical measures describe the centre and spread of data. The lesson builds conceptual clarity around mean, median, and mode before extending to interquartile range, variance, and standard deviation, helping students see how different measures capture different aspects of a distribution .

Students explore estimation of the mean from grouped data using class midpoints, identify modal classes, and interpret measures of dispersion alongside central tendency. The resource also highlights the effects of linear transformations on mean and standard deviation, reinforcing structural understanding rather than memorisation of rules. Technology-based quartile calculations are included to mirror IB expectations and calculator use .

Structured practice tasks guide students through full calculations, grouped-data estimation, and interpretation of results in context. With scaffolded questions, worked examples, and a complete answer key, this resource supports SL-level classroom instruction and independent study while strengthening students’ statistical reasoning in line with IB Mathematics AI assessment requirements .