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Math Help - Mean of sample means

  1. #1
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    Exclamation Mean of sample means

    Hello everyone! I don't know how to find mean of sample means! Here I did only frequency table.Here is the task( in attachment)
    Attached Thumbnails Attached Thumbnails Mean of sample means-task.jpg  
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  2. #2
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    Re: Mean of sample means

    Find the mean of each number's digits like in the example the mean of 9704 is 5. Then you have 18 values for the means. Find the mean of the 18 values.
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  3. #3
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    Re: Mean of sample means

    In other words, as in the example, "average" the four digits: the average of the digits of the first number, 1665, is (1+ 6+ 6+ 5)/4= 18/4= 4.5. After you have done that for all 18 numbers, average those 18 numbers- add them up and divide by 18.
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  4. #4
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    Re: Mean of sample means

    Wow!Thank you very much!!! I got the right answer. I just didn't understand the question.


    Have a nice day
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