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ZIMSEC O-Level Additional Mathematics

6.2Probability and Statistics

Probability and Statistics in ZIMSEC O-Level Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Syllabus section328 practice questions17 lessons

In this topic

Lessons

  • Discrete random variables: distributions, expectation and variance

    45 min

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  • The binomial distribution

    50 min

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  • Mean, median and mode

    45 min

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  • Point estimates: unbiased estimators of the mean and variance

    40 min

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  • Populations, samples and sampling methods

    40 min

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  • Probability language: sample spaces, events and Venn diagrams

    40 min

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  • Statistical terms, sources and types of data

    30 min

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  • The normal distribution and standard normal tables

    40 min

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  • Approaches to probability: classical, experimental and subjective

    35 min

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  • Continuous random variables and probability density functions

    45 min

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  • Collecting, organising and presenting data

    50 min

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  • Finding the mean or standard deviation of a normal distribution

    40 min

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  • Confidence intervals for a population mean

    45 min

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  • Measures of dispersion: range, quartiles and standard deviation

    50 min

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  • The distribution of the sample mean and the central limit theorem

    45 min

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  • Addition and product rules, outcome tables and tree diagrams

    45 min

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  • Conditional probability

    45 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Probability and Statistics: sample question

1 mark

X∼B(6,0.4)X \sim B(6, 0.4). Find P(X=2)P(X = 2), correct to 3 significant figures.

Only if the answer has a unit, e.g. cm or km/h.

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