arne.b
Reputation
280
Top tag
Next privilege 500 Rep.
Access review queues
 Oct 21 comment Logic fallacy in giving 35 students 100 balls w/ every student having at least one Did you try distributing 2 (or 3) excess balls among 2 students? Apr 8 awarded Notable Question Dec 12 comment Hexagonal Tessellation on a sphere Come on, do not leave us in the dark about who "they" are. Are you sure "they" were talking about a sphere? Links please, so we can check whether you misunderstood "them". Dec 12 revised Hexagonal Tessellation on a sphere removed inappropriate tags Dec 12 suggested approved edit on Hexagonal Tessellation on a sphere Dec 12 comment Hexagonal Tessellation on a sphere How did you "come to know that hexagon [...] tessellation of a sphere is the most appropriate"? btw: game-theory? Are you trying to create a computer game? Oct 13 answered The smallest integer $n$ for a Poisson distribution Oct 10 comment The smallest integer $n$ for a Poisson distribution "...not a good method (I think)" Why not? Because it looks tedious? Also, are you familiar with the concept of cumulative distribution functions? Sep 30 revised What is the meaning of percentile? added 13 characters in body Sep 30 comment How many hamburgers can be ordered, if there can be eight toppings? "I think there is no sufficient information"...what more information do you think you need? If you figure this out, you may be able to at least give an answer of the kind "if we allow this, then x, if we do not allow it, then y"... Sep 25 comment What is the meaning of percentile? Where is the part in grey quoted from? It is equivalent to what the OP's teacher said, and still in grave contradiction to what your links say. "n% of the highest mark" does not work for A-B-C-D-F grades, yet percentiles (and ranks) can be calculated. Also, by that logic, if the two richest persons somewhere own 3 and 1 bazillion, respectively, one is in the 100th percentile and everyone else in the 33rd or below. Sep 25 answered What is the meaning of percentile? Sep 25 comment What is the meaning of percentile? I still do not think we have the same interpretation of what the teacher meant. The teacher references a single "highest achiever", not the number of 'lower' or 'higher achievers' (as in "examinees...who scored at or below..."). Sep 25 comment What is the meaning of percentile? @Arthur "not the most common way of defining it"? I would say the teacher is defining a totally different concept. If someone makes 10% of what Warren Buffett makes, are they in the 10th percentile of the income distribution? I'd say they are still far above the median (i.e. 50th percentile). Sep 25 comment What is the meaning of percentile? The explanation at your Percentile Rank link does not mention the highest score that the OP's teacher referred to. I do not see how the teacher could have meant what is explained at the link. May 22 comment Finding the positions of 2 points in a simple 2D geometric configuration @SDV Increase the angle at C, then E and F move farther apart. Thus, EF should be a strictly increasing function of the angle, and I would take "EF=L" as indication that this length is given. May 20 answered Why are polyhedra related to the prime numbers 2, 3 and 5, but not to the prime number 7? May 20 comment Limits Problem worked 2 ways gives 2 different answers You divide something that is supposedly 2 by $x$. $x\to\infty$. Two divided by something going to infinity approaches $0$. $0$ is the result you get. Why are you surprised? ;-) Mar 5 revised Find $z$ of a point in a plane in 3D space added 868 characters in body Mar 5 comment Find $z$ of a point in a plane in 3D space I know, I saw your age in your profile. :) Have you seen systems of linear equations before? I would have added some more wikipedia links, they may not be helpful beyond the the introduction before the table of contents (e.g. Coplanarity. Some things that come up when googling "vectors introduction" look more helpful.