The ages of 18 swimmers and 11 cyclists in a sports carnival race were recorded. The results are shown in the stem-and-leaf diagram.

  1. (a)

    Given that the median age of the swimmers is 26 years old, find the value of x.

    Answer x = ...

  2. (b)

    Find the interquartile range of the cyclists' age.

    Answer ...

  3. (c)

    Make two comments comparing the ages of the swimmers and the cyclists.

    Answer

Central tendencyQuartiles percentilesCompare data sets中文
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