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Math Help - Mean and median.

  1. #1
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    Mean and median.

    There's a group of 35 programmers. Among them, the median salary is $67,000 and the mean salary is $77,000. Calculate the mean and median in each of the following cases (individually, not consecutively).
    a. The lowest paid programmer, whose salary is less than $47,000, gets a $20,000 raise. What is the new mean and new median?
    b. The highest paid programmer gets a $20,000 raise. What is the new mean and median?
    c. All programmers get a $20,000 raise. What is the new mean and median?
    d. The two highest paid programmers each get a $40,000 raise (they threatened to leave and start their own company). What is the new mean and median?
    Last edited by mr fantastic; September 29th 2011 at 11:23 PM. Reason: Restored deleted question, re-titled, moved to correct subforum.
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  2. #2
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    Re: Please show me how to do these-practice problems? MATH!?

    Heres some help with the mean for part a.

    Mean salary = (Combined salaries of all programmers)/(Total number of programmers)

    Substituting the information you have:

    77,000 = (Combined salaries of all programmers)/35

    What is the combined salaries of all programmers?

    After you know this add 20,000 and divide by 35, you'll have the new mean.

    Also, if the lowest paid programmer has a pay increase which is below the median, is the median going to change?
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