
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:25 AM
micromass

1 
32,444 
I have an application where I need to pick a probability distribution (x_{1},\ldots,x_{n}) at random and uniformly...

T 01:09 AM
haruspex

1 
61 
I'm reading about the exponential family of distributions. In my book, I have the expression
f(x\theta) =...

Y 11:09 AM
Greg Bernhardt

1 
133 
I am attempting to calculate the even distribution of units sale across a predefined range with a final average value...

Y 10:16 AM
Aston08

1 
86 
I have a function
$$F$$
I am trying to find the error correlation between the function at one point and another....

Y 07:03 AM
Hepth

7 
188 
Hi all, I was going over the poll
http://www.physicsforums.com/showthread.php?t=766275, and I was wondering how one...

Y 02:13 AM
WWGD

0 
91 
Are the Real numbers R a subset of the complex numbers C?

Aug2014 07:37 PM
jostpuur

29 
830 
Forgive my ignorance; I'm a programmer and relatively mathminded, but I haven't taken statistics since high school.
...

Aug1914 02:23 AM
Sheppie

8 
384 
I have been out of unversity statistics and biometry for a few years do date. I am working in a clical research...

Aug1614 09:11 AM
Stephen Tashi

1 
156 
does anyone know sample codes with explanation on computing Geographically Weighted Regression using MATLAB?I am a...

Aug1514 07:14 PM
Greg Bernhardt

1 
234 
I am trying to delete this thread but I am not sure how to  sorry

Aug1314 09:59 PM
jedishrfu

4 
178 
Hi all,
I Dont understand a principle from beardon, Algebra and Geometery chapter 2 real numbers...
Please...

Aug1314 12:04 PM
statdad

12 
258 
I have a group of dogs (3 brown male, 2 brown female, 4 white male, 4 white female, 5 black male, 4 black female)...

Aug1314 07:07 AM
haruspex

5 
163 
"In multivariate probability distribution higherorder cumulants contain information of decreasing significance,...

Aug1114 10:52 AM
statdad

4 
278 
Hi all,
Firstly, hope I'm posting in the right place!
I'm working with a company that works with air filters....

Aug1014 01:16 AM
haruspex

3 
239 
Consider two independent random events A and B. Is the event A/B independent from event B?
My real problem stems...

Aug1014 01:02 AM
haruspex

20 
2,049 
Hi there, I have a bit of a confusing question, but I'll try to be as clear as I can in asking it.
I have a set...

Aug1014 12:56 AM
haruspex

7 
1,997 
If you take two arbitrary numbers from a set N  lets say N stands for the natural numbers  and add them together,...

Aug914 10:53 AM
HallsofIvy

23 
527 
Mathematicians have long held that infinite integers do NOT exist, but here is a very simple argument that shows that...

Aug814 02:45 PM
phinds

13 
423 
Dear All,
I am a starter to machine learning and i am currently confused about the following problem:
what is...

Aug814 09:26 AM
Stephen Tashi

10 
299 
Just refreshing my understanding of measurable cardinals, the first step (more questions may follow, but one step at a...

Aug314 04:17 PM
mathman

2 
258 
I have some data from gas emission samples, part of the data was sampled in a region with a characteristic A and...

Aug314 12:40 PM
FactChecker

25 
618 
Hello! :)
I' have a problem...
I fitted experimental data with a second order exponential theoretical curve: ...

Aug214 03:27 PM
mfb

7 
229 
Boolean Algebra is a well known field of study in mathematical logic. In Boolean Algebra (BA), a statement can be...

Aug214 01:10 PM
adrianmitrea

21 
957 
So, I'm having a pretty lazy day and decided to do some thinking. And, while this usually turns out to be a splendid...

Aug214 11:50 AM
Hornbein

13 
319 
I have a list of scores between 0 and 1 generated by an information retrieval system  1 being very relevant and 0...

Aug214 02:56 AM
Stephen Tashi

4 
205 
I have around 550 asymmetrical sigmoid curves fitted to a function with 4 varying coefficients. Each of these curves...

Jul3114 03:55 PM
Stephen Tashi

3 
215 
According to wiki:
http://en.wikipedia.org/wiki/Poisson_process
The probability for the waiting time to observe...

Jul2914 03:54 PM
mathman

1 
239 
I really like the derivations here
http://en.wikipedia.org/wiki/Proofs_involving_ordinary_least_squares
Could...

Jul2914 02:10 PM
Greg Bernhardt

1 
443 
Let's say I'm applying electrical currents to a certain part of a human test subject and measuring certain deflections...

Jul2914 02:10 PM
Greg Bernhardt

1 
524 
Is infinity part of any set?

Jul2914 02:07 PM
micromass

1 
194 
Is zero a real number?

Jul2914 01:55 PM
johann1301

4 
220 
Imagine points in a plane with a uniform density. To use a simple model, consider just a finite region such as the...

Jul2814 09:55 PM
marcusl

2 
187 
Hi everybody, I apologize if this question is too basic but I did 1 hour of solid Google searching and couldn't find...

Jul2814 04:07 PM
gill1109

2 
190 
I have 3 fair dices. The probability of 2 of them lying in the same number without the 3rd doing so is given by...

Jul2814 09:38 AM
gill1109

9 
588 
Prove Russel's paradox by contradiction and what does it tell us about sets?
I tried doing it like this and I am not...

Jul2714 10:52 AM
Stephen Tashi

5 
900 
From what I understand, and please correct me if I'm wrong:
An "Argument" in sentential logic is a set of...

Jul2714 03:07 AM
twoslit

7 
3,140 
I've been figuring out the use of the nonparametric bootstrap and if I understand correctly, this is the procedure:
...

Jul2514 10:31 AM
Stephen Tashi

3 
830 
I thought I understood all the theory quite well and sat down to begin coding until I realized that calculating a...

Jul2514 08:36 AM
TheOldHag

4 
535 
Suppose I have around 20 exposures that potentially affect an outcome and I want to see which exposures have bigger...

Jul2414 09:14 PM
FactChecker

3 
480 
Three statements:
1) I will take a shower if the water is warm.
2) I will take a shower unless the water is cold....

Jul2214 04:04 PM
MrAnchovy

14 
1,160 