Experimental Design B/C

ThatRoboGuy · Post by **ThatRoboGuy** » Thu Mar 06, 2014 6:15 pm

Huehuehue...still in Division B. c;
But I'll try my best.

When I make my statistics table, I make it like the data table.

Row 1 is IV 1
Row 2 is IV 2
Row 3 is IV 3
Row 4 is Overall

Column 1 is Average
Column 2 is Median
Column 3 is Mode (If there isn't one, write N/A)
Column 4 is Range (Stupid statistic, but these four are required by rules for Div B)

Hope I helped.

JTMess · Post by **JTMess** » Thu Mar 06, 2014 8:42 pm

What do people normally use as the "other appropriate statistic" in their experiments?

BSchiffer · Post by **BSchiffer** » Fri Mar 07, 2014 5:02 am

I know we are allowed to bring a ruler, but are we allowed to use this ruler in our experiment, for say, a ramp? Or a support? Or is the ruler solely for measurements?

Mortem_Haedo · Post by **Mortem_Haedo** » Fri Mar 07, 2014 6:49 am

I think the ruler is solely used for measurements and you can only include in the experiment the materials they give you. Sometimes they give you a list of materials you can use, so you can check that ^_^

Post by **zyzzyva980** » Fri Mar 07, 2014 12:20 pm

Mortem_Haedo wrote:I think the ruler is solely used for measurements and you can only include in the experiment the materials they give you. Sometimes they give you a list of materials you can use, so you can check that ^_^

That's correct. You shouldn't use any materials that you bring into the room for the experiment itself (just for measurements)

JTMess · Post by **JTMess** » Sat Mar 08, 2014 11:17 pm

How is the measure of central tendency in the division c stats different from the mean, median, and mode in the general stats section? Also, does work need to be shown for stats or is it appropriate to obtain them directly from your calculator?

Phys1cs · Post by **Phys1cs** » Sun Mar 09, 2014 5:53 pm

JTMess wrote:How is the measure of central tendency in the division c stats different from the mean, median, and mode in the general stats section? Also, does work need to be shown for stats or is it appropriate to obtain them directly from your calculator?

Measure of central tendency is basically standard deviation.
Work does need to be shown for at least one of each type of statistic you use. Usually you get an extra sheet of paper (if not, ask! tell your supervisor what you're using it for and they should give you one) I then always write by the stat table "see (insert thing here) for the computations. They were all done with data set X" Then just show the work for all the computations of data set X and you should get all the points!

JTMess · Post by **JTMess** » Mon Mar 10, 2014 7:43 am

Phys1cs wrote:
JTMess wrote:How is the measure of central tendency in the division c stats different from the mean, median, and mode in the general stats section? Also, does work need to be shown for stats or is it appropriate to obtain them directly from your calculator?
Measure of central tendency is basically standard deviation.
Work does need to be shown for at least one of each type of statistic you use. Usually you get an extra sheet of paper (if not, ask! tell your supervisor what you're using it for and they should give you one) I then always write by the stat table "see (insert thing here) for the computations. They were all done with data set X" Then just show the work for all the computations of data set X and you should get all the points!

Hmmm ok we thought that the measure of variation was standard deviation. What is this stat supposed to be then?

jwalkotten · Post by **jwalkotten** » Mon Mar 10, 2014 5:20 pm

JTMess wrote:
Phys1cs wrote:
JTMess wrote:How is the measure of central tendency in the division c stats different from the mean, median, and mode in the general stats section? Also, does work need to be shown for stats or is it appropriate to obtain them directly from your calculator?
Measure of central tendency is basically standard deviation.
Work does need to be shown for at least one of each type of statistic you use. Usually you get an extra sheet of paper (if not, ask! tell your supervisor what you're using it for and they should give you one) I then always write by the stat table "see (insert thing here) for the computations. They were all done with data set X" Then just show the work for all the computations of data set X and you should get all the points!
Hmmm ok we thought that the measure of variation was standard deviation. What is this stat supposed to be then?

measure of variation is standard deviation...
measure of central tendency is mean, median, or mode...hence I was also confused haha
we basically just do as many statistics as we can think of and hope we get it all. we have at the invitationals so far but not 100% sure
we do mean, median, mode, range, drawn-in-line-of-best-fit, standard deviation, and variance
not sure if that helps at all

Phys1cs · Post by **Phys1cs** » Mon Mar 10, 2014 6:58 pm

[quote="
Hmmm ok we thought that the measure of variation was standard deviation. What is this stat supposed to be then?[/quote]
measure of variation is standard deviation...[/quote]

Standard deviation is the square root of the variance, and the variation is the standard deviation squared

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