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CHAPTER AT A GLANCE
The Mathematics of Maybe: Introduction to Probability
•Unit: Statistics and Probability
•Board weightage: this unit carries a small share of the paper; expect a 2-mark or 3-mark probability question and one case-study part (please check the latest sample paper)
•Key ideas from the textbook: randomness, probability scale 0 to 1, experimental and theoretical probability, sample space, events, tree diagrams, gambler's fallacy
•Most scoring part: counting favourable outcomes and writing the sample space correctly
•Time to revise: about 45 minutes
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