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A year 9 unit of work containing the following topics.
(1) The Median: Calculating the median. Calculating the median from a table. Comparing two distributions.
(2) The Median Class: Finding the median class or the estimate for the median.
(3) The Interquartile Range: Calculating the interquartile range of a set of data.
(4) Cumulative Frequency Diagrams: Cumulative frequency tables. Drawing a cumulative frequency diagram. Estimating the median and the interquartile range.
(5) Scatter Diagrams: Drawing a scatter diagram. Types of correlation. Line of best fit.
(6) Probability as a Fraction Writing the probability of an event as a fraction. The probability that an event will not happen. Sample space diagrams. Expected frequency.

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