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?