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Week 7: Working with data

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This is a horizontal line labelled `Rainfall(in.).’ A scale is marked on the line and each division represents one tenth of an inch. Dots are plotted on the scale at 4.5, 4.6, 5.2, 5.8 and 9.3. A vertical arrow points to the mark which represents 5.9 and this is labelled as the mean.