Experimental Design B/C

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Cjkowalcz
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Re: Experimental Design B/C

Postby Cjkowalcz » Thu Apr 25, 2013 10:22 am

Hey guys! I have this soon and I think I'm pretty well prepared. Wish me luck!
Last edited by Cjkowalcz on Sat Apr 27, 2013 5:02 pm, edited 1 time in total.
2014 Rustin Invitational:
Entomology: 5th
Experimental Design: 1st
2014 Regionals:
Entomology: 3rd
Meteorology: 2nd
Experimental Design: 1st
2014 States:
???
Medal Count: 14 (Hoping for 15 after my last B-division States ;))

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Re: Experimental Design B/C

Postby caseyotis » Thu Apr 25, 2013 11:43 pm

Good luck! I hope you fare better than I did! :)
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Re: Experimental Design B/C

Postby mrburrito » Fri Apr 26, 2013 10:48 pm

Cjkowalcz wrote:Hey guys! I have this event soon and I think I'm pretty well prepared. Wish me luck!


So, how did you do?
I bet you had to read this twice

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Re: Experimental Design B/C

Postby caseyotis » Sat Apr 27, 2013 2:32 am

I'm guessing it's going to be on Saturday, but... Maybe not. *shrug*
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Re: Experimental Design B/C

Postby fantasyfan » Sat Apr 27, 2013 2:34 am

nope, PA went today
Looking forward to anatomy, protein, fossils, and optics (NYS trial) this year!

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Re: Experimental Design B/C

Postby caseyotis » Sat Apr 27, 2013 2:36 am

Oh, on a Friday? Well, okay then! :lol:
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“Goodbye,” said the fox.
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Re: Experimental Design B/C

Postby Cjkowalcz » Mon Apr 29, 2013 9:41 pm

We got 7th in Experimental Design! It had to do with probability. We had to add mass to a coin and see how it effected whether it landed on heads or tails. Sure, I wanted a medal, but considering our team has only been to states twice (ever), I think we did good!
2014 Rustin Invitational:
Entomology: 5th
Experimental Design: 1st
2014 Regionals:
Entomology: 3rd
Meteorology: 2nd
Experimental Design: 1st
2014 States:
???
Medal Count: 14 (Hoping for 15 after my last B-division States ;))

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Re: Experimental Design B/C

Postby caseyotis » Mon Apr 29, 2013 9:43 pm

Cjkowalcz wrote:We got 7th in Experimental Design! It had to do with probability. We had to add mass to a coin and see how it effected whether it landed on heads or tails. Sure, I wanted a medal, but considering our team has only been to states twice (ever), I think we did good!


That's a lot better than us! :lol: Then again, that doesn't sound too hard. How did your team do?
http://scioly.org/wiki/index.php/User:Caseyotis
Welcome, welcome
“Goodbye,” said the fox.
“And now here is my secret, a very simple secret:
It is only with the heart that one can see rightly;
what is essential is invisible to the
eye.”
Le Petit Prince, Antoine de Saint-Exupéry

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Re: Experimental Design B/C

Postby Cjkowalcz » Tue Apr 30, 2013 1:20 am

We did alright. Are team isn't really to the point where we are a huge threat at states, but we're beginning to excel at the regional competition. Also, the way the experimental design topic was worded was confusing. It said, "how does mass added to a coin effect the number of times it lands on heads or tails in a period of flipping it for 1 minute?" At first, I thought that the probability wouldn't be effected, but then I realized it meant if you added mass to one side of the coin. But still, it was confusing and I had a block for the first 5 minutes.
2014 Rustin Invitational:
Entomology: 5th
Experimental Design: 1st
2014 Regionals:
Entomology: 3rd
Meteorology: 2nd
Experimental Design: 1st
2014 States:
???
Medal Count: 14 (Hoping for 15 after my last B-division States ;))

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Re: Experimental Design B/C

Postby tangentline » Tue Apr 30, 2013 3:19 am

Cjkowalcz wrote:We did alright. Are team isn't really to the point where we are a huge threat at states, but we're beginning to excel at the regional competition. Also, the way the experimental design topic was worded was confusing. It said, "how does mass added to a coin effect the number of times it lands on heads or tails in a period of flipping it for 1 minute?" At first, I thought that the probability wouldn't be effected, but then I realized it meant if you added mass to one side of the coin. But still, it was confusing and I had a block for the first 5 minutes.


AP Statistics! Z proportion testing / chi square would've gotten you bonus points (well it would be if I was grading it :P), I don't know if division B gets anything special for those that do. You can have your null hypothesis and alternative hypothesis and predict which one will take place :)
A former Science Olympian that continues to work with his old team.

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Re: Experimental Design B/C

Postby CulturallyScientific » Tue Apr 30, 2013 3:52 am

tangentline wrote:
Cjkowalcz wrote:We did alright. Are team isn't really to the point where we are a huge threat at states, but we're beginning to excel at the regional competition. Also, the way the experimental design topic was worded was confusing. It said, "how does mass added to a coin effect the number of times it lands on heads or tails in a period of flipping it for 1 minute?" At first, I thought that the probability wouldn't be effected, but then I realized it meant if you added mass to one side of the coin. But still, it was confusing and I had a block for the first 5 minutes.


AP Statistics! Z proportion testing / chi square would've gotten you bonus points (well it would be if I was grading it :P), I don't know if division B gets anything special for those that do. You can have your null hypothesis and alternative hypothesis and predict which one will take place :)


That sounds like fun! ...But exactly how would you determine the Level of Significance?
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Re: Experimental Design B/C

Postby tangentline » Tue Apr 30, 2013 7:10 am

~5% rule? Doing what is reasonable for how important the matter of the problem asked.
I know certain scientific calculators can do the z-test, (linear regression, other tests would be nice too), would make the conclusion etc much stronger than simply stating summary statistics.
A former Science Olympian that continues to work with his old team.

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Cjkowalcz
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Re: Experimental Design B/C

Postby Cjkowalcz » Tue Apr 30, 2013 7:13 pm

Huh?
2014 Rustin Invitational:
Entomology: 5th
Experimental Design: 1st
2014 Regionals:
Entomology: 3rd
Meteorology: 2nd
Experimental Design: 1st
2014 States:
???
Medal Count: 14 (Hoping for 15 after my last B-division States ;))

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caseyotis
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Re: Experimental Design B/C

Postby caseyotis » Tue Apr 30, 2013 11:37 pm

Cjkowalcz wrote:Huh?


^^
I don't know anything, obviously.
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“Goodbye,” said the fox.
“And now here is my secret, a very simple secret:
It is only with the heart that one can see rightly;
what is essential is invisible to the
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Re: Experimental Design B/C

Postby CulturallyScientific » Wed May 01, 2013 2:01 am

tangentline wrote:~5% rule? Doing what is reasonable for how important the matter of the problem asked.
I know certain scientific calculators can do the z-test, (linear regression, other tests would be nice too), would make the conclusion etc much stronger than simply stating summary statistics.


Wow, thanks! We just covered this in math class last week, but I've never thought about using/testing the null hypothesis for something... but for calculators, since we're only allowed a scientific calculator for ED, can we still do that? The only calculators that I know of that can do the z-test and others are graphing calculators... should I bother to invest in a new scientific calculator that can do more advanced tests?
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