• BasketballsDownload .TXT file Open in Data Desk ?Link
  • Methods: Quality Control
  • Source: invented data based on Basketball production
  • Number of Cases: 30
  • Story:

    A company that makes basketballs has the
    motto: “Our basketballs are ready to play.” Therefore, it
    is important to the company that the basketballs are inflated
    with the proper amount of air when shipped. Most
    basketballs are inflated to 7 to 9 pounds per square inch.
    Recently the company selected a random basketball from
    its production line at four different time periods over its
    normal production day. The results were recorded.

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