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Who knows how to do Index of Qualitative Variation(IQV)?

   
Old 02-16-2009, 10:22 PM
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Default Who knows how to do Index of Qualitative Variation(IQV)?
Math noob/boob here:

In attached document its problem 4, part B.

To calculate the IQV we:

k(N2 – S f2 )
N2 (k-1)


(those 2's are squared not 2)
Attached Files
File Type: pdf
Problem Set 1 POS3713-02.pdf (28.9 KB, 408 views)
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Old 02-16-2009, 10:45 PM
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Number 5 c is killing me too because I can't figure out how to make a frequency bar graph in excel.
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Old 02-16-2009, 11:10 PM
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You can google stuff on excel and figure out how to make a bar graph. I've done that before, so anyone can do it.

As for 4b, dunno. What's your major?
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Old 02-16-2009, 11:14 PM
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Originally Posted by patsmx5
You can google stuff on excel and figure out how to make a bar graph. I've done that before, so anyone can do it.

As for 4b, dunno. What's your major?
poli sci.

They have this class for students intending graduate studies I took. Aka its a statistics and game theory class, kill me.
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Old 02-16-2009, 11:16 PM
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Figured out 5c. Just cheated and input the information without using the excel formula.
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Old 02-16-2009, 11:22 PM
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42.
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Old 02-16-2009, 11:29 PM
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Originally Posted by kotomile
42.
Perfect! It checks and everything. Thanks!

Answer to everything kthx
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Old 02-16-2009, 11:34 PM
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omg I've been trying to calculate the mass flow rate of ocean water across a heat exchanger for a reheat Rankine cycle and I was lost. 42 kg/s it is!!!
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Old 02-17-2009, 12:13 AM
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no way!

I was sitting here trying to calculate how many beers it would take for me to try and pretend like I remembered a single thing from my college quant classes, and I got 42 also!
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Old 02-17-2009, 12:44 AM
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No problem guys, I am a mere good samaritan...
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Old 02-17-2009, 12:46 AM
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Moral of the Story : Math makes me want to quit school.
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Old 02-17-2009, 12:58 AM
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I had a teacher tell me in HS, "He who has the math has the money". So I'm retaking Cal 4. And DE... Kicking *** in my other classes though. Doing a regenerative cycle in thermo II right now, and almost got it. I think..
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Old 02-17-2009, 01:13 AM
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Just in case anyone was curious I got a thermal efficiency of 35.8%. But that's an ideal case of course, neglecting the turbine and two pump's efficiencies.
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Old 02-17-2009, 01:26 AM
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I had a doctor tell me once "the sloppier the handwriting, the more money the person makes." Seemed to be working for him.
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Old 02-17-2009, 02:10 AM
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Originally Posted by kotomile
I had a doctor tell me once "the sloppier the handwriting, the more money the person makes." Seemed to be working for him.
That seems to be the truth. All of our big clients at work (medical lab) have the shittiest handwriting skills. Though its likely an assistant or something.
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Old 02-17-2009, 07:25 PM
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Originally Posted by patsmx5
Just in case anyone was curious I got a thermal efficiency of 35.8%. But that's an ideal case of course, neglecting the turbine and two pump's efficiencies.
Ah okay, I was wondering myself.

p.s. teach gave the whole class an extension today because he had been on conference and unable to answer questions.

I asked him today, and he showed me. He wanted me to make up the frequencies to show the highest/lowest variation. After I found out he wanted us to fabricate the math, I copied from this cute girl who sits next to me.
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