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Steps of chi squared test for independence are explained with an example.

IB Mathematics: Applications and Interpretation HL Spearman's rank correlation coefficient powerpoint slides with an investigation, international mindedness and TOK questions.

This resource covers key concepts from Graph Theory, including Chinese Postman Problem and Traveling Salesman Problem, aligned with IB Math: Applications and Interpretation HL (AHL3.14–3.16). It includes: Example questions from the Oxford and Haese textbooks Scaffolded investigations to promote student inquiry A dedicated TOK activity linking mathematics to real-world thinking Reflection and inquiry prompts after each section to deepen understanding Perfect for in-class instruction, designed t