What about for division B? A lot of the statistics would be much more simpler with an algorithm on a graphing calculator, but that's taken away.nicholasmaurer wrote:Many proctors will be unfamiliar with ANOVA, so I would not recommend using it for your statistical analysis. It is certainly not necessary to do so.Jacobi wrote:I think it means that you shouldn't be doing mode or range for Division C.pal_420 wrote:What do the rules mean by age-appropriate statistic? Does this mean we can't have more complex stuff like ANOVA?
Who knows? You might want Pearson Correlation.
Also, how would ANOVA even apply to XPD data?
At the Division C level, I would generally recommend you choose either Pearson's correlation coefficient (r and r^2) or Student's t-test. These will cover almost every scenario and are easy to calculate using a graphing calculator. It is important that you understand and interpret the meaning of the results, rather than simply reporting them.
Mean and standard deviation will almost always be the best measures of center and spread to report. Occasionally, median might be preferred, but you're unlikely to have a sufficient sample size to know if your data is skewed.
Experimental Design B/C
-
- Exalted Member
- Posts: 809
- Joined: Tue Apr 11, 2017 6:55 pm
- Division: C
- State: MO
- Pronouns: He/Him/His
- Has thanked: 2 times
- Been thanked: 7 times
Re: Experimental Design B/C
-
- Exalted Member
- Posts: 1597
- Joined: Sun Jan 18, 2015 7:42 am
- Division: C
- State: PA
- Has thanked: 6 times
- Been thanked: 15 times
Re: Experimental Design B/C
I would say mean and standard deviation are fairly easy to calculate by hand, but you could also use the mean absolute deviation which takes the absolute values instead of squaring and then square rooting (even easier by hand!).dxu46 wrote:What about for division B? A lot of the statistics would be much more simpler with an algorithm on a graphing calculator, but that's taken away.nicholasmaurer wrote:Many proctors will be unfamiliar with ANOVA, so I would not recommend using it for your statistical analysis. It is certainly not necessary to do so.Jacobi wrote: I think it means that you shouldn't be doing mode or range for Division C.
Who knows? You might want Pearson Correlation.
Also, how would ANOVA even apply to XPD data?
At the Division C level, I would generally recommend you choose either Pearson's correlation coefficient (r and r^2) or Student's t-test. These will cover almost every scenario and are easy to calculate using a graphing calculator. It is important that you understand and interpret the meaning of the results, rather than simply reporting them.
Mean and standard deviation will almost always be the best measures of center and spread to report. Occasionally, median might be preferred, but you're unlikely to have a sufficient sample size to know if your data is skewed.
Re: Experimental Design B/C
Given that they say "age-appropriate", they would expect mean, median, range, mode????dxu46 wrote:What about for division B? A lot of the statistics would be much more simpler with an algorithm on a graphing calculator, but that's taken away.nicholasmaurer wrote:Many proctors will be unfamiliar with ANOVA, so I would not recommend using it for your statistical analysis. It is certainly not necessary to do so.Jacobi wrote: I think it means that you shouldn't be doing mode or range for Division C.
Who knows? You might want Pearson Correlation.
Also, how would ANOVA even apply to XPD data?
At the Division C level, I would generally recommend you choose either Pearson's correlation coefficient (r and r^2) or Student's t-test. These will cover almost every scenario and are easy to calculate using a graphing calculator. It is important that you understand and interpret the meaning of the results, rather than simply reporting them.
Mean and standard deviation will almost always be the best measures of center and spread to report. Occasionally, median might be preferred, but you're unlikely to have a sufficient sample size to know if your data is skewed.

-
- Exalted Member
- Posts: 809
- Joined: Tue Apr 11, 2017 6:55 pm
- Division: C
- State: MO
- Pronouns: He/Him/His
- Has thanked: 2 times
- Been thanked: 7 times
Re: Experimental Design B/C
Alright, thanks.UTF-8 U+6211 U+662F wrote:I would say mean and standard deviation are fairly easy to calculate by hand, but you could also use the mean absolute deviation which takes the absolute values instead of squaring and then square rooting (even easier by hand!).dxu46 wrote:What about for division B? A lot of the statistics would be much more simpler with an algorithm on a graphing calculator, but that's taken away.nicholasmaurer wrote:
Many proctors will be unfamiliar with ANOVA, so I would not recommend using it for your statistical analysis. It is certainly not necessary to do so.
At the Division C level, I would generally recommend you choose either Pearson's correlation coefficient (r and r^2) or Student's t-test. These will cover almost every scenario and are easy to calculate using a graphing calculator. It is important that you understand and interpret the meaning of the results, rather than simply reporting them.
Mean and standard deviation will almost always be the best measures of center and spread to report. Occasionally, median might be preferred, but you're unlikely to have a sufficient sample size to know if your data is skewed.
Just wondering, are there any ES's out there on the forums? I'm curious on how certain sections are judged (i.e. Analysis, Qualitative, Statistics)
-
- Exalted Member
- Posts: 1597
- Joined: Sun Jan 18, 2015 7:42 am
- Division: C
- State: PA
- Has thanked: 6 times
- Been thanked: 15 times
Re: Experimental Design B/C
(Also see Jacobi's post, although I'm skeptical of range being a good indicator of anything, and you probably won't have a mode)dxu46 wrote:Alright, thanks.UTF-8 U+6211 U+662F wrote:I would say mean and standard deviation are fairly easy to calculate by hand, but you could also use the mean absolute deviation which takes the absolute values instead of squaring and then square rooting (even easier by hand!).dxu46 wrote: What about for division B? A lot of the statistics would be much more simpler with an algorithm on a graphing calculator, but that's taken away.
-
- Exalted Member
- Posts: 809
- Joined: Tue Apr 11, 2017 6:55 pm
- Division: C
- State: MO
- Pronouns: He/Him/His
- Has thanked: 2 times
- Been thanked: 7 times
Re: Experimental Design B/C
Right, unless it's a very broad measurement or rounded, modes are not a thing.UTF-8 U+6211 U+662F wrote:(Also see Jacobi's post, although I'm skeptical of range being a good indicator of anything, and you probably won't have a mode)dxu46 wrote:Alright, thanks.UTF-8 U+6211 U+662F wrote: I would say mean and standard deviation are fairly easy to calculate by hand, but you could also use the mean absolute deviation which takes the absolute values instead of squaring and then square rooting (even easier by hand!).
-
- Member
- Posts: 289
- Joined: Mon Jan 22, 2018 11:28 pm
- Division: Grad
- State: HI
- Has thanked: 8 times
- Been thanked: 20 times
Re: Experimental Design B/C
Hey, does anyone know what:
(M) suggestions for other ways to look at hypothesis means?
(K) important info about data collection?
(J) all data discussed and interpreted?
means?
We never were really given clarification for it and even our coach doesn't know.
(M) suggestions for other ways to look at hypothesis means?
(K) important info about data collection?
(J) all data discussed and interpreted?
means?
We never were really given clarification for it and even our coach doesn't know.
Finally an alumnus!
Highlands Intermediate School '16-'19
Pearl City High School '19-'22
DMAH '18-'22
UC Irvine '26
https://scioly.org/wiki/index.php/User:Galahad
Highlands Intermediate School '16-'19
Pearl City High School '19-'22
DMAH '18-'22
UC Irvine '26
https://scioly.org/wiki/index.php/User:Galahad
-
- Exalted Member
- Posts: 809
- Joined: Tue Apr 11, 2017 6:55 pm
- Division: C
- State: MO
- Pronouns: He/Him/His
- Has thanked: 2 times
- Been thanked: 7 times
Re: Experimental Design B/C
M: Just other interpretations - i.e. different IV levels. The 3 parts are different experiment same topic, different IV, and improve the current one.Galahad wrote:Hey, does anyone know what:
(M) suggestions for other ways to look at hypothesis means?
(K) important info about data collection?
(J) all data discussed and interpreted?
means?
We never were really given clarification for it and even our coach doesn't know.
K: Maybe give a short explanation of how the data was collected and the role of the error in it.
J: In an experiment, all the parts need to be discussed, or else that part was of no use. Analysis is a means to draw conclusions from all parts of the experiment.
side note: this is my 500th post!
-
- Exalted Member
- Posts: 1597
- Joined: Sun Jan 18, 2015 7:42 am
- Division: C
- State: PA
- Has thanked: 6 times
- Been thanked: 15 times
Re: Experimental Design B/C
Wait, is it new that Experimental Design is in the at-the-beginning-of-the-competition time block (same block as Disease Detectives)? Do we know how definite this is?
-
- Member
- Posts: 445
- Joined: Wed Oct 11, 2017 12:07 pm
- Division: C
- State: NY
- Has thanked: 22 times
- Been thanked: 12 times
Re: Experimental Design B/C
New York states had this last year, so maybe it was in other states as well, but not nationals afaik. It's a good system, honestly, because now no one has any advantages or disadvantages.UTF-8 U+6211 U+662F wrote:Wait, is it new that Experimental Design is in the at-the-beginning-of-the-competition time block (same block as Disease Detectives)? Do we know how definite this is?
8th grade: I knew stuff about rocks, minerals, experiments, and ecosystems!
9th grade: I knew stuff about amphibians, reptiles, freshwater, and experiments!
10th grade: I knew stuff about oceanography, saltwater, birds, and fossils!
11th grade: I knew stuff about birds and fossils!
9th grade: I knew stuff about amphibians, reptiles, freshwater, and experiments!
10th grade: I knew stuff about oceanography, saltwater, birds, and fossils!
11th grade: I knew stuff about birds and fossils!