Foundation
30th December 2025
- 1Stem and Leaf Diagrams
A stem-and-leaf row, with key '3|1 means 31', is '3|0 2 4 4 7 9'. Find the median of these six values.
- 2Histograms
A histogram for exam scores has bars of equal width 10 marks, covering 0-10, 10-20, 20-30, 30-40, with heights 2, 8, 15, 5. How many students took the exam?
- 3Venn Diagrams
Out of 25 pupils, 12 like football, 9 like tennis, and 4 like both. How many like neither sport?
- 4Frequency Polygons
A frequency table has classes 0-10, 10-20, 20-30 with frequencies 3, 9, 6. State all three coordinates for the frequency polygon.
- 5Tree Diagrams
A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
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