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Posted by on Tuesday, September 2, 2014 at 12:24pm.

Which interval describes the number of hours spent studying in a typical week for about 50% of the students sampled?
2 to 9
9 to 14
9 to 20
14 to 20
A five number summary of respones is:
2,9, 14, 20, 60

  • statistics - , Tuesday, September 2, 2014 at 12:39pm

    A five-number summary represents the following qualifiers:
    minimum
    Q1
    median
    Q3
    maximum

    the interval minimum/median represents 50% of the data in the lower half.
    the interval median/maximum represents 50% of the data in the upper half.
    the interval Q1/Q3 represents 50% of the data in the middle half, which better represents the population.

    So choose the appropriate interval and post your answer for a check if you wish.

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