Paper 2 · Statistics
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Lesson 13 of 21
Statistics 13 z scores 5 (standardising formula)
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- Standardise a raw value with z = (x − μ)/σ before looking up pages 36/37
- Draw paired real-scale and z-scale diagrams for every standardising question
- Solve real-world normal problems: standardise → look up → apply complement/mirror
Most recent exam questions
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