Re: Class Rank Estimator
Posted: Wed Jun 22, 2011 4:57 pm
No idea what I am doing. Fuck.
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Someone broke it again. Probably you.bjsesq wrote:No idea what I am doing. Fuck.
I stopped immediately once I realized that something wasn't right, but yeah, I probably fucked it up.existenz wrote:Someone broke it again. Probably you.bjsesq wrote:No idea what I am doing. Fuck.
Fixed.bjsesq wrote:I stopped immediately once I realized that something wasn't right, but yeah, I probably fucked it up.existenz wrote:Someone broke it again. Probably you.bjsesq wrote:No idea what I am doing. Fuck.
I wrote that. Someone replaced "Your GPA" with "your balls," so I though it was appropriate.paulinaporizkova wrote:hahaha I can almost hear you saying this in person, shakin your headDG wrote:It's not that awesome to vandalize it.
It's not perfect, hence the title "estimator." It assumes normality and goes off of there. That said, unless your school curve is very far from the normal distribution, it should be fairly close. The probable answer here is that either the data point you are using to estimate is unrepresentative, or your curve is very far from the normal distribution.dusk2k2 wrote:I'm not so good with math, but this seems to not work in determining class rank at my school. For example, my school gives A+ and all first year classes are curved between 3.0 and 3.3. Yet, using historical numbers, when I put an example gpa of 4.0, it gives a class rank of approximately top 6 percent. This simply cannot be. Heck, when I put the highest gpa in the class, it gives a percentile of top 3 percent. Can anyone explain how this math works?
Yeah, just fiddle with the numbers until you get top 5%, top 4.8% (or whatever's appropriate for your class size), etc. As you noted, this is obviously subject to a great deal of variance - this sort of prediction becomes more and more unstable at the tails (the top 1% is an outlier, after all).nymario wrote:Here's a question: can you list the expected GPAs for the top 20 ranked students. Obviously this will be subject to a good amount of variance, but I'm curious as to how the top 5% is likely to shake out.
Assuming 400 students, Median is 3.177 (mean 3.2 (or slightly less) -- think 3.19-3.195)
10%=3.622
15%=3.511
20%=3.477
25%=3.410
If you're closer to the 10% than the 25%, yeah. But you use what you've got. I'd like to stress that this is an estimator, not a crystal ball. The difference in precision between using the 25% and 10% estimator should not be considered concrete enough to change any plans you may have.dusk2k2 wrote:Will this not be as accurate if you are using a data point that is farther from where your GPA is? For example, my school only gives quartiles, so the only cut off point I can know is the top 25% cutoff. Would it be more accurate if I knew what the top 10% cutoff was?
Just got informed of exact rank today, and yeah, the estimator is more accurate if you use the % that you are probably closer to.dailygrind wrote:If you're closer to the 10% than the 25%, yeah. But you use what you've got. I'd like to stress that this is an estimator, not a crystal ball. The difference in precision between using the 25% and 10% estimator should not be considered concrete enough to change any plans you may have.dusk2k2 wrote:Will this not be as accurate if you are using a data point that is farther from where your GPA is? For example, my school only gives quartiles, so the only cut off point I can know is the top 25% cutoff. Would it be more accurate if I knew what the top 10% cutoff was?
how off was your actual ranka the estimator used here?traehekat wrote:Just got informed of exact rank today, and yeah, the estimator is more accurate if you use the % that you are probably closer to.dailygrind wrote:If you're closer to the 10% than the 25%, yeah. But you use what you've got. I'd like to stress that this is an estimator, not a crystal ball. The difference in precision between using the 25% and 10% estimator should not be considered concrete enough to change any plans you may have.dusk2k2 wrote:Will this not be as accurate if you are using a data point that is farther from where your GPA is? For example, my school only gives quartiles, so the only cut off point I can know is the top 25% cutoff. Would it be more accurate if I knew what the top 10% cutoff was?
dailygrind wrote:Word of mouth for what determines honors, I would imagine. My school has a law review grade-on for the top 25 students in our class of ~370, and typically number 25 falls somewhere in the area of 3.7 (this is the common lore of the school, anyway), so we use 3.7 and 25/370 = top 6.8% as our data point.Hadlendale wrote:Anyone know a good method for obtaining an example data point? Or is this just something that is available via google for certain schools?
Yeah, can't hurt. Especially if you're considering an ED transfer (just uses first semester grades).ilovesf wrote:I only have my first semester grades. Does it make sense to even bother using this to calculate my rank since it's only done after second semester? I don't want to get ahead of myself or anything.
Should be good to go now. The editable class rank calc is the first page. If you click the tab at the bottom for the locked (protected copy) you can duplicate it. I've also integrated the combined GPA/Rank Calc into the spreadsheet.niederbomb wrote:So it won't let me change the values, nor does right clicking do anything.
I don't think it's possible without more info. If I had to guess, probably somewhere between top 8% and top 22%.ProsBuff wrote:Anybody know how to calculate class rank at a school like Berkeley? Grading scale within each subject is like this:
Top 10%: HH
11-40%= H
bottom 60% = P
Hypothetically ( ) if I got 3 H my first semester (out of 3 classes), does anybody know of a way to get some kind of rough estimate on what my class rank (by percentile) might be?
Thanks so much
It's possible that it gets a little distorted at the extremes, so it probably won't be able to tell you your exact rank. But you can probably at least safely assume you're top 1-2%Jessuf wrote:Ok, oops. The data I found was actually for the right median.Jessuf wrote:So I found some GPAs for top 10% and top 25% from 2010. However, the curve at my school was 2.7-2.9 then. It is now 2.9-3.1. Is there any way to adjust this data to fit my GPA? I am a statistics dummy.
So why does the calculator keep telling me I'm ranked #1?! That's not possible with my GPA.