Statistics and probability in Cambridge Lower Secondary equip students with skills to collect, display, and analyse data, and to calculate and understand probability — essential skills for IGCSE and real-world decision making.
Mean, median, mode from raw data and frequency tables. Range as a measure of spread. Choosing the best average. Data display: bar charts, dual/compound bar charts, pie charts, line graphs, stem-and-leaf diagrams, scatter plots with lines of best fit. Reading and interpreting data from various representations.
Probability scale from 0 to 1. Calculating theoretical probability of single events. Sample spaces for two events. Mutually exclusive events: P(A or B) = P(A) + P(B). Experimental probability and comparing with theoretical. Tree diagrams for two successive events.
The Cambridge Lower Secondary Checkpoint Mathematics test has two papers: Paper 1 is non-calculator and Paper 2 allows a scientific calculator. Students should practise both mental/written methods and calculator skills. The same structure continues into IGCSE.
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