Disease Detectives B/C

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Disease Detectives B/C

Postby Jim_R » August 4th, 2013, 3:04 pm

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Re: Disease Detectives B/C

Postby Infinity Flat » August 29th, 2013, 12:19 am

Man, it feels really weird to not be competing in this event after doing it for 5 years. Best of luck to all of you who actually are! :)
(State, Nationals)
2013: Astro (2, 6) / Chem (2, 5) / Circuits (8, 36) / Diseases (1,1) / Fermi (N/A, 24) / Materials (1, N/A)
2012 : Astro (1, 11) / Chem (N/A, 13) / Diseases (3, 1) / Optics (2, 3) / Sounds (2, 1)
2011: Astro(2,11) / Diseases (1,27) / Optics (1,13) / Proteins (2,15)

ptkid
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Re: Disease Detectives B/C

Postby ptkid » August 30th, 2013, 5:37 pm

So, are there any new changes?
Seven Lakes High School '16
Previous National Champion in Green Generation and National Medalist in CJAP, Disease Detectives, Entomology, & Water Quality

CaRoLyN_s
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Re: Disease Detectives B/C

Postby CaRoLyN_s » September 1st, 2013, 8:16 am

The focus is still Environmental Quality I think, so it should cover pretty similar topics and questions.
2014 Events:
Disease Detectives
Sounds of Music
Meteorology
Simple Machines

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Re: Disease Detectives B/C

Postby Crazy Puny Man » September 6th, 2013, 6:04 pm

Infinity, GrayEpi, I see the new rule changes! Now I regret not taking AP Stats -_-

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Re: Disease Detectives B/C

Postby bbgun34 » September 14th, 2013, 10:03 pm

I haven't seen the official rules yet, but the calculations can't be that difficult, can they? Nothing you can't find and learn easily on the 'net, I'd guess.

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Re: Disease Detectives B/C

Postby Flavorflav » September 18th, 2013, 11:11 am

Maybe 25% of the teams can really handle the math we already had, in my experience. Now we have a bunch more math, so this year should be interesting.

scio444
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Re: Disease Detectives B/C

Postby scio444 » September 28th, 2013, 5:40 pm

Can someone explain the rule changes?

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Re: Disease Detectives B/C

Postby Flavorflav » September 30th, 2013, 6:19 am

Can someone explain the rule changes?
No change for B, as far as I can see. C has a bunch of new math.

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Re: Disease Detectives B/C

Postby Infinity Flat » November 2nd, 2013, 9:57 am

Just as a PSA, there's now a really good set of statistics learning guides on the soinc website for disease detectives in case anyone is struggling with the new math.
(State, Nationals)
2013: Astro (2, 6) / Chem (2, 5) / Circuits (8, 36) / Diseases (1,1) / Fermi (N/A, 24) / Materials (1, N/A)
2012 : Astro (1, 11) / Chem (N/A, 13) / Diseases (3, 1) / Optics (2, 3) / Sounds (2, 1)
2011: Astro(2,11) / Diseases (1,27) / Optics (1,13) / Proteins (2,15)

Jajamola88
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Re: Disease Detectives B/C

Postby Jajamola88 » November 3rd, 2013, 8:21 pm

Are there any new formulas we have to know? There's already a LOT of stuff to memorize in this event. I would be completely doomed without my one sheet of notes, and my school tryouts don't allow notes....help!

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Re: Disease Detectives B/C

Postby Crazy Puny Man » November 17th, 2013, 9:22 pm

Will we be expected to have the tables of statistical significance (with different levels of confidence) on our reference sheet, or will the event supervisor provide us with them?

Also (this is for Div C only), can anyone make sense of the last three tests on the statistics hand-out? It's really dense and I wound up just looking it up myself

Flavorflav
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Re: Disease Detectives B/C

Postby Flavorflav » November 21st, 2013, 6:20 am

Are there any new formulas we have to know? There's already a LOT of stuff to memorize in this event. I would be completely doomed without my one sheet of notes, and my school tryouts don't allow notes....help!
Yes. The rules specifically discuss rate adjustment (direct and indirect) and Mantel-Haenszel. I don't know if you will see them on regional tests, though.
Will we be expected to have the tables of statistical significance (with different levels of confidence) on our reference sheet, or will the event supervisor provide us with them?

Also (this is for Div C only), can anyone make sense of the last three tests on the statistics hand-out? It's really dense and I wound up just looking it up myself
The rules say "basic statistical methods." To me, Chi square is basic. Fisher's exact test etc. are not. The handout comes from national, though, so I would be prepared to see those at that competition. Since Mantel-Haenszel is specifically mentioned in the rules, you might see that as well - although I would not have predicted mantel-Haenszel Chi Square, but MHRR and MHOR. Just throw the formulas on you sheet, and understand when and why they are used.

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Re: Disease Detectives B/C

Postby Crazy Puny Man » November 22nd, 2013, 1:34 pm

For the Z-test and T-test, should we just know under which circumstances each test is used? And do we need to be able to calculate the T-score?

Because it looks like there are lots of different formulas that can be used to approximate the T-score under different circumstances

3141592653589792
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Re: Disease Detectives B/C

Postby 3141592653589792 » December 2nd, 2013, 11:31 am

I do NOT Understand this event. Can someone help me? :D
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