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November 23rd, 2012, 09:06 AM  #1 
Senior Member Joined: Mar 2012 Posts: 118 Thanks: 0  Find Sk and Find Kv ( i got example formula below)
CI(class interval) 79 1012 1315 1618 1921 F(FREQUENCY) 2 10 12 9 7 a.find Sk (skewness) b.find kv (kurtosis) c.Graph the destribution 
November 23rd, 2012, 09:42 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 9,757 Thanks: 651  Re: Find Sk and Find Kv 
November 23rd, 2012, 09:52 AM  #3 
Senior Member Joined: Mar 2012 Posts: 118 Thanks: 0  Re: Find Sk and Find Kv
guys help me answer this pls

November 24th, 2012, 07:59 PM  #4 
Senior Member Joined: Mar 2012 Posts: 118 Thanks: 0  Re: Find Sk and Find Kv
the formula i have on my notebook is sk=3(xx)/q and kv = QD/ P90P10 and how to draw here or i just say the question is about normal destribution 
November 24th, 2012, 09:55 PM  #5 
Senior Member Joined: Jul 2012 From: DFW Area Posts: 594 Thanks: 74 Math Focus: Electrical Engineering Applications  Re: Find Sk and Find Kv ( i got example formula below)
Try looking at http://www.tc3.edu/instruct/sbrown/s...kewnessCompute. It has an example that is structured very much like your problem, with a range of values and frequency. I do not see similar formulae though.

November 25th, 2012, 12:40 AM  #6 
Senior Member Joined: Mar 2012 Posts: 118 Thanks: 0  Re: Find Sk and Find Kv ( i got example formula below)
i did that boss do you think its sure check my formula is kinda different.but if no one answer i will do that one formula in your link the formula is kinda different there is always 3/2 at the end of your formula thats y im confuse and wanted some1 to answer it 

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