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9. Data collection, representation and analysis

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9A Types of Data

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9B Dot plots and column graphs

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9C Line Graphs

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9D Sector Graphs and divided bar graphs

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9E Frequency Distribution tables

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9F Frequency Histograms and frequency polygons

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9G Mean, median, mode and range

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9H Interquartile Range - extension

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9I Stem and leaf plots

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9J Surveying and sampling

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