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#1 Re: Help Me ! » A question about statistical measures using Histograms. » 2008-05-11 08:53:10
thank you both! I really appreciate the help. Yeah I don't think I'm required to use any other advanced technique so the above solution should be fine.
And thanks mathsyperson, I got the same values for the Q and median. 
#2 Help Me ! » A question about statistical measures using Histograms. » 2008-05-11 06:38:43
- cherokeexp
- Replies: 3
Hello everyone, I have been an avid viewer of these forums for a while and have finally decided to join to ask a question.
Any help on the following question will be appreciated.
Wages (£000s) class width Frequency Amended Frequency
8<12 4 16 4
12<14 2 30 15
14<15 1 60 60
15<16 1 48 48
16<18 2 42 21
18<26 8 24 3
The first part of the question asked to calculate the median (n/2) and quartile (3n/4 and n/4) wages. I used the formula L + (k/f *w) to obtain the corresponding wages.
The next part of the question asks:
Calculate the number of graduates starting on salaries between £11000 and £21000.
I don't know how to do these as these wages lie inbetween the class widths.
Any help? Thank you 
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