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    Frequency polygons for grouped data

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    Frequency polygons for grouped data

    Below are the times (in days) it takes for a sample of 20 customers from Andrew's computer store to pay their invoices.

    Draw the frequency polygon for these data using an initial class boundary of 12.5 and a class width of 7. Note that you can add or remove classes from the figure. Label each class with its midpoint.

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    Solution Summary

    The expert examines frequency polygons for grouped data.