*This Math quiz is called 'Handling Data 2' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is an enjoyable way to learn if you are in the 3rd, 4th or 5th grade - aged 8 to 11.*

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Handling data involves tables, charts and diagrams. You may have come across Carroll diagrams in your lessons which are used for grouping things in a yes/no fashion. Did you know these diagrams are named after Lewis Carroll - the author of *Alice's Adventures in Wonderland*?

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Data handling also involves ranges and averages. The range of data is the difference between the highest and lowest frequencies. There are three different types of average - mean, median and mode. Median is the middle frequency piece of data, mode is the one that appears most often and mean is worked out by adding all the frequencies together and dividing by the number of frequencies.

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