Question

The list below shows the number of magazines a bookstore sold each day during one week
5,6,8,9,6,10,7
What is the median number of magazines sold during the week
A.6
B.7
C.9
D.10

Answers

  2. Answer:  7 (choice B)

    Explanation:
    First we need to sort the values from smallest to largest. Doing so gets us this list
    5,6,6,7,8,9,10
    Don’t toss out the duplicates.
    There are n = 7 items in this list. The midpoint will happen at slot n/2 = 7/2 = 3.5 = 4
    The value in the fourth slot is 7, so this is the median. Note how 5,6,6 are below the median and 8,9,10 are above the median. We have an equal number of items below and above the median.

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