摘要：Knowledge of probability is perceived as valuable in the 21st century. Thisknowledge enables people to understand and make informed decisions relating touncertain events that occur in real life. Hence, many educational authorities haveconsidered the inclusion of the teaching of probability important in their schoolcurricula. This study investigated Grade 12 students’ proficiency in solvingprobability problems using contingency tables and tree diagrams as aids. Thisstudy employed cross-sectional survey research design, and a mixed methodresearch approach. Data was collected from 342 secondary school students whowere conveniently selected from six schools in the KwaZulu-Natal province inSouth Africa using an achievement test. The study revealed that most of thestudents (97% and 91%) scored below 50% in solving probability problemsinvolving the use of tree diagrams and contingency tables respectively. Thefindings show that the students were not proficient in the use of tree diagrams andcontingency tables to solve probability problems. The implications of the findingsof this study for teacher training and professional development, and textbookpublication are discussed and recommendations made.
