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9 February, 15:20

If there are 21 values in a data set in order from smallest to largest, what is the first quartile of the data set

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  1. 9 February, 18:49
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    See below in bold.

    Step-by-step explanation:

    The median will be the middle number - that is the 11th.

    The first quartile will be the middle value of the first ten numbers.

    That is the mean of the 5th and 6th number.
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