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A sample of purchases at the local convenience store has resulted in the following sample data, where x = the number of items purchased per customer and f = the number of customers.

x 1 2 3 4 5
f 5 15 8 8 7

•What does the 15 stand for in the above table?
•Find the midrange of items purchased.
•How many items were purchased by the customers in this sample?

  • Statistics - ,

    The 15 indicates that 15 customers each bought 2 items = subtotal of 30 items bought.

    That should help you with the other questions.

  • Statistics - ,

    So the midrange of items purchases would be 3.
    5+30+24+32+35 = 126 items were purchased by the customers in this sample.

    Did i do this correctly?

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