Experimental Design B/C

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chscioly
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Re: Experimental Design B/C

Post by chscioly »

Our teams have been having trouble getting points for "Example calculations given" under Quantitative Data because our dependent variable might be time, or something that doesn't require calculation. Are we supposed to put averages? We don't put the averages in the table, because we leave those in the Statistics portion of the experiment.
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Re: Experimental Design B/C

Post by Panda Weasley »

chscioly wrote:Our teams have been having trouble getting points for "Example calculations given" under Quantitative Data because our dependent variable might be time, or something that doesn't require calculation. Are we supposed to put averages? We don't put the averages in the table, because we leave those in the Statistics portion of the experiment.
We always did sample calculations for the Statistics portion. With the raw data table there normally isn't much to put calculations for besides average. Do include average in you sample calculations as well as any used in the experiment/the statistics portion.
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Re: Experimental Design B/C

Post by samlan16 »

Panda Weasley wrote:
chscioly wrote:Our teams have been having trouble getting points for "Example calculations given" under Quantitative Data because our dependent variable might be time, or something that doesn't require calculation. Are we supposed to put averages? We don't put the averages in the table, because we leave those in the Statistics portion of the experiment.
We always did sample calculations for the Statistics portion. With the raw data table there normally isn't much to put calculations for besides average. Do include average in you sample calculations as well as any used in the experiment/the statistics portion.
My best advice is to not let the word "sample" deceive you- to get full points, you often have to show all your work. This includes the formula you are using and any calculations needed to construct your summary/second table.

If our experiment dictates that we need to use the raw data to calculate another number (i.e. using frequency to calculate period), my team draws a second table to list the calculated data. In this case, our sample calculations are the formula needed for the calculations (T=f^-1) and every individual calculation.

Otherwise, the summary table lists the averages for each level of the IV. We write out the formula for calculating the average and, once again, show the calculation for each data point.
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Re: Experimental Design B/C

Post by nghtlrk »

Ayo, just a quick question - what should a "condensed data table with most important information" look like? We already have a table for all results from all trials, so should the "condensed" table simply be one with averages?
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Re: Experimental Design B/C

Post by maxxxxx »

nghtlrk wrote:Ayo, just a quick question - what should a "condensed data table with most important information" look like? We already have a table for all results from all trials, so should the "condensed" table simply be one with averages?
The condensed table should just be the averages of your trials. Make sure you keep it separate from the main table, and also include sample calculations. If you do it wrong it's an easy way to lose a few points.
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Re: Experimental Design B/C

Post by samlan16 »

maxxxxx wrote:
nghtlrk wrote:Ayo, just a quick question - what should a "condensed data table with most important information" look like? We already have a table for all results from all trials, so should the "condensed" table simply be one with averages?
The condensed table should just be the averages of your trials. Make sure you keep it separate from the main table, and also include sample calculations. If you do it wrong it's an easy way to lose a few points.
An addition to what I said earlier: if you have to calculate some data (like period from frequency), make a second table with that data, THEN make the table of averages with that.
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Re: Experimental Design B/C

Post by Eureka314 »

On the rubric, under procedures, what do they mean by "repeated trials"? Like how would you include that in the procedure?
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Re: Experimental Design B/C

Post by maxxxxx »

Eureka314 wrote:On the rubric, under procedures, what do they mean by "repeated trials"? Like how would you include that in the procedure?
After explaining how to do a trial, say "repeat steps x-y with (insert level of IV)". I don't do procedure so that may not be as technical as they want it to be.
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Re: Experimental Design B/C

Post by samlan16 »

maxxxxx wrote:
Eureka314 wrote:On the rubric, under procedures, what do they mean by "repeated trials"? Like how would you include that in the procedure?
After explaining how to do a trial, say "repeat steps x-y with (insert level of IV)". I don't do procedure so that may not be as technical as they want it to be.
That's pretty much it. Make sure that you say repeat.
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Re: Experimental Design B/C

Post by Eureka314 »

Are there any specific calculator restrictions? Like are ti-89's allowed?
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