Nuria Rico|Juan Francisco Ruiz-Hidalgo
Errors concerning Statistics and Probability in Spanish Secondary School Textbooks
Universidad de Granada|Universidad de Granada
textbooks considered essential providing hierarchical organisation knowledge forging intellectual scaffolding students teachers alike playing crucial role compulsory education paper discuss means content analysis systematic errors detected presentation questions related statistics probability spanish secondary school textbooks mathematics found errors appear systematically texts common faulty differentiation quantitative qualitative variables discrete continuous variables randomness determinism confused examples bar charts uncritical choice graphic representations inaccuracies specific vocabulary ignoring prior probabilities poor consideration representativeness classify observed errors considering errors arise inherent difficulty content others arise differences mathematical statistical thinking well judgments based heuristic rules knowing existence errors reasons occur key points make disappear statistical lessons help citizens achieving true statistical literacy