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The size of cash payments made by 119 customers at a petrol station are summarized in the following grouped frequency distribution. Plot a cumulative relative frequency graph. [3 Marks] Payment (£) Frequency Relative Frequency Cumulative relative Frequency 5.00-9.99 15 15/119 = 0.126 0.126 10.00-14.99 37 37/119 = 0.311 0.437 15.00-19.99 41 41/119 = 0.344 0.781 20.00-24.99 22 22/119 = 0.185 0.966 25.00-24.99 4 4/119 = 0.034 1.000

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