This is probably a simple math question for someone who knows math.
Schools create an index number by using this equation:
(X * testscorenumber) + (Y * GPA) + constant = indexnumber
Some schools index numbers max out at 5, some at 200. Nonetheless, the difference between schools is in how they weight GPA vs. testscore.
What formula would allow me to compare the importance of once factor over another among schools. I.e., School A weighs testscores 2x more than school B? Is it a simple ration between X and Y?
posted by JakeWalker
on Jan 16, 2007 -
A speeding driver just about rear-ended my delivery truck. I know how long her skidmarks are. Can I determine how fast she was driving? [more inside]
posted by jdroth
on Dec 21, 2006 -
Mathematicians, I've always suspected there is a real opportunity to exploit the inefficiencies of the online sports betting markets and amateur bettors and make serious money. Have you felt the same way or am I kidding myself? [more inside]
posted by vizsla
on Dec 17, 2006 -
I remember reading an anecdote about Feynman, written by Feynman either in Surely, You're Joking or What Do You Care What Other People Think. He was describing how in his undergraduate years people were really impressed by his ability to do integrals, all because he knew this integration technique that wasn't taught very often. What was that technique?
posted by phrontist
on Dec 4, 2006 -
Science and math educators, K-12 and college! What are your favourite science and math sites that you use for planning lessons and curricula, or for classroom use? And why? Thanks! [more inside]
posted by carter
on Nov 16, 2006 -
I am currently a graduate student who has been tutoring first year students in math at my university for the past 4 years. I've tutored probably over 140 students. I'd like to start doing prep sessions for exams and am looking for some advice. [more inside]
posted by jplank
on Nov 10, 2006 -
Mathematics Factoring Problem
16p^8w – 49p^6w
The ^ represents an exponent.
I know this problem is a difference of two squares, it's the 8w and 6w that throw me off. I've tried several solutions but none check to be true.
posted by foreversport
on Nov 6, 2006 -
How do I take the derivative of the gamma function, so I can prove that the derivative of the gamma function is the gamma function multiplied by the polygamma function? [more inside]
posted by Loto
on Nov 5, 2006 -
What is the next number in this sequence: 4, 58, 40, 27, 18, 12, 8, ? Please give your explanation. [more inside]
posted by scodger
on Oct 29, 2006 -
A math terminology question. What is meant by a "log-linear" relationship, and what distinguishes it from a plain logarithmic one?
posted by shoos
on Oct 27, 2006 -
Vector Geometry Filter: I'm working in matlab and need to transform a surface to match an arbitrary angle. I have the unit vector of the new normal (and the original normal is in the Z axis (0 0 1))...however i'm not sure how to rotate one normal to another (i know, i know, it sounds very simple really...) [more inside]
posted by NGnerd
on Oct 23, 2006 -
Where can I find mathematical fomulas for calculating coordinating colors for interior decorating projects? [more inside]
posted by Vorteks
on Oct 20, 2006 -
help me prove this is impossible:
package of goobers has 5 per package
package of marshmallows has 2 per package
package of gum has 1 per package
how can i have 9 packages totalling 13 treats?
i think its impossible. prove me wrong.
posted by fumbducker
on Oct 16, 2006 -
Online Degree Question: Has anyone actually completed a math degree online? If so, what school did you attend and how would you rate it? [more inside]
posted by fellion
on Oct 16, 2006 -
Is there a formula for converting cubic meters to tons?
I missed this lesson in math class way back when and now I need to do these conversions for a project at work.
posted by socrateaser
on Oct 12, 2006 -
I want to give my 4 year old a decent grounding in science, but I'm prety dim, myself. Where do I start? [more inside]
posted by maryh
on Oct 4, 2006 -
I just discovered that my math professor is recycling homework assignments verbatim from prior years. I have a friend that took the course a couple years ago, and has all the answer keys. Is it ethical for me to use them? [more inside]
posted by jtfowl0
on Sep 25, 2006 -
Could someone suggest book(s) that deal with tips/tricks/methods of performing mathematical calulations faster. I mean higher mathematics and not just elementary operations like addition/multiplication/finding the root etc.
What I am looking for are hints and shortcuts that would help me with stuff like calculus, linear albegra, vectors and such.
posted by sk381
on Sep 20, 2006 -
What is Multivariable Testing, really? It was mentioned in this NYTimes article
, but the term is only ever used in relation to QualPro, Inc.
. What is the real mathematical/statistical technique they're using? Is this related to the Taguchi Method
? Can someone explain it to me?
posted by joshwa
on Sep 19, 2006 -
It's official: my 11 year-old daughter is missing her math gene: Please suggest some math gene therapy. [more inside]
posted by sexymofo
on Sep 11, 2006 -
I need a little help figuring out the odds of a baseball pool scenario actually occurring. (And correctly constructing this question, it looks like). [more inside]
posted by nevercalm
on Sep 7, 2006 -
I can visualize complex 3D objects in my mind, and give them arbitrary rotations. Why can't I do long multiplication in my head? [more inside]
posted by b1tr0t
on Sep 1, 2006 -
MathFilter: Okay, I've got this gumball machine, which contains an infinite amount of gumballs, evenly distributed between 100 different flavors... [more inside]
posted by rifflesby
on Sep 1, 2006 -
If I have 3 or more locations on a map, how can I find the nearest point to all the locations? [more inside]
posted by hubs
on Aug 29, 2006 -
A while back I was implementing a distributed transaction coordinator, and in the process also learned some of the pertaining theory. The only thing I can remember semi-vividly was a proof showing that you can't synchronize an action between two parties over an unreliable link, but I can't seem to find it any longer.
The final step of the proof was something like "thus, if this was possible, you could shorten every conceivable protocol by one step, which reduces all protocols to the zero-step protocol, which is impossible".
I'm pretty sure that it's a standard result of computer science, but I'm unable to find the right keywords to locate it. Help?
posted by themel
on Aug 18, 2006 -
If i have a 20% probability of something happening each time its checked, and make two checks of said event triggering, what is the overall chance of it happening? [more inside]
posted by teishu
on Aug 14, 2006 -
An out-of-left-field question for the mathematicians regarding the possible link between pi and the number 6 in geometry. [more inside]
posted by Navelgazer
on Aug 14, 2006 -
I need more examples of "interesting" calculus (or other mathy) trivia like this one factoid I mention in here... [more inside]
posted by evinrude
on Aug 10, 2006 -
Mrs. Everichon is convinced that there is a law or principle (as in "Foo's Law") which describes the phenomenon wherein a pond can take weeks to become 50% covered in algae, but then the remaining 50% takes only a day. [more inside]
posted by everichon
on Jul 25, 2006 -
Can someone explain coinduction (mathematics, computer science) in English? [more inside]
posted by knave
on Jul 24, 2006 -
My sweet son has many disabilities--type 1 diabetes, ADHD, depression. At 15, he just confessed with great pain that he doesn't know his multiplication tables very well. Explains a lot.
Any really wonderful suggestions that don't infantilize and humiliate him. Ones that work? Any personal success stories and moral support will make me heart you.
posted by wordswinker
on Jul 21, 2006 -