Experimental Design B/C

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Bozongle
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Re: Experimental Design B/C

Post by Bozongle »

In general, considering experiments, how do you guys decide if an experiment makes sense in the long run? My team has had a lot of experiments in which we have all the parts necessary (controls, variables, etc) but the experiment just doesn't seem practical. Is this a bad thing? Should we go towards more practical experiment ideas?
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Re: Experimental Design B/C

Post by Phys1cs »

Bozongle wrote:In general, considering experiments, how do you guys decide if an experiment makes sense in the long run? My team has had a lot of experiments in which we have all the parts necessary (controls, variables, etc) but the experiment just doesn't seem practical. Is this a bad thing? Should we go towards more practical experiment ideas?
impractical as in time wise, or just strange, like there are better experiments to do for a given topic?
If it is because tit may take too long, I would switch for sure. Time is key in this event, and any time you can give to write up by spending less time on the lab is better, though you still want a good lab.

If it's because it seems like something not many other people are doing, or an "out there" idea, if it costs you nothing extra to do that lab rather than a more "common" lab, then just make sure you can apply it to real life and the conclusion parts of your lab. We have done a couple labs where stranger labs sometimes make it hard to find applications for. Though if you can find some of these, and have enough to back it up and still get points, there is no reason to not. It may be to your advantage to do something not everyone is doing, but get all the points where other people are as well.
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Re: Experimental Design B/C

Post by JustDroobles »

Phys1cs wrote:
phil9047 wrote:
What does the scoring rubric mean by "example calculations given" in the quantitative data section?
Showing how you got your data. If you had a data set of 1, 2, 3, 4, 5, it would look similar to:

Mean: (1+2+3+4+5)/5 = 3
Median: 1 2 3 4 5 (because I can't figure out how to strikethrough, matching colors are crossed out to get the median of 3)

Mode: None, no numbers repeat

etc. Basically you just do the math for one set of numbers. Just next to your data table, write something like "all data computated and shown *insert place* is used with the data set of the control" and that shows you know how to do the math asked for the statistics
I don't believe this is entirely correct. If this item was meant for you to show how you calculated statistics such as the mean and median, it would fall under the statistics section of the rubric. Since it falls under the quantitative data section, I think the spirit is intended to be the calculations involved in the scientific analysis rather than the statistical analysis of the data. For example, if your dependent variable is speed, in many cases you will not measure speed directly, but measure the length an object takes to travel a certain distance. Then your example calculation should show that the formula used was speed=distance/time, and at least one numerical calculation example.

Also note that in the Procedure section, you should not have to include instructions for how to analyze the data. The procedure should only describe how to measure the necessary data.
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Re: Experimental Design B/C

Post by Crazy Puny Man »

I'm pretty sure you're supposed to do statistical calculations as well (ie standard deviation at least, yes?)
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Re: Experimental Design B/C

Post by Phys1cs »

Crazy Puny Man wrote:I'm pretty sure you're supposed to do statistical calculations as well (ie standard deviation at least, yes?)
'Division C is the only one who needs Standard Deviation. I always include the variance as well, because that's part of standard deviation, and why not include it?
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Re: Experimental Design B/C

Post by Crazy Puny Man »

Phys1cs wrote:
Crazy Puny Man wrote:I'm pretty sure you're supposed to do statistical calculations as well (ie standard deviation at least, yes?)
'Division C is the only one who needs Standard Deviation. I always include the variance as well, because that's part of standard deviation, and why not include it?
I mean go through an example calculation of standard deviation for one of your levels of the IV in your sample calc's
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Re: Experimental Design B/C

Post by Phys1cs »

Crazy Puny Man wrote:
Phys1cs wrote:
Crazy Puny Man wrote:I'm pretty sure you're supposed to do statistical calculations as well (ie standard deviation at least, yes?)
'Division C is the only one who needs Standard Deviation. I always include the variance as well, because that's part of standard deviation, and why not include it?
I mean go through an example calculation of standard deviation for one of your levels of the IV in your sample calc's
Any statistic you use, you should show the calculation for. Again, you really only have to do it for one data set because that proves yoi know how to math (and saves time) but at least one of each statistic.
Last edited by Phys1cs on April 1st, 2014, 2:17 pm, edited 1 time in total.
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Re: Experimental Design B/C

Post by SOnerd »

Do you guys have any tips to prepare for the topics??
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Re: Experimental Design B/C

Post by phil9047 »

SOnerd wrote:Do Our Glorious Lord and Saviour Robotman the Honourable guys have any tips to prepare for teh topics??
What do y0u mean by topics?
Sine functions are quite odd, to be honest.
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Re: Experimental Design B/C

Post by Crazy Puny Man »

phil9047 wrote:y0u?
Nice :lol:
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