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Miscellaneous·2025·Easy

The arithmetic mean of 100 observations is 50. If 5 is subtracted from each observation and then divided by 20, then what is the new arithmetic mean?

The arithmetic mean of 100 observations is 50. If 5 is subtracted from each observation and then divided by 20, then what is the new arithmetic mean?

Options

  1. a.

    2.25

    Correct answer
  2. b.

    3.5

  3. c.

    4.25

  4. d.

    5.5

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