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

Feb2313 09:25 AM
micromass

1 
32,581 
Hello everyone,
I am having a bit of trouble understanding the metropolis hastings algorithm which can be used to...

Oct1410 04:47 PM
pamparana

0 
1,015 
How many elements are in a sub1 intersect a sub 2 which equals a null set
when a sub 1 =12 and a sub2 = 18

Sep405 11:42 AM
neurocomp2003

1 
1,100 
Hi folks,
I am in the energy industry, and we do linear/multilinear regressions stats.
One of the concepts being...

Feb411 07:27 PM
statdad

1 
3,387 
c = correlation between the IQs of parents and children
s = standard deviation for IQs of the group the parents...

Dec2910 11:21 AM
Jupiterx5

10 
1,457 
Given a Natural number K, how many combinations \
of Natural numbers vectors are there, so that \
?
I'm...

Apr1105 02:08 PM
Palindrom

2 
1,069 
Is it correct that \
, N denoting the natural numbers?
If not, is there another symbol for the left hand side of the...

Sep605 08:43 AM
Palindrom

6 
3,056 
Let's have a look at \left\{ \neg,\equiv\right\}. How could one show that this isn't complete?
I've tried finding...

Jun107 09:59 AM
Palindrom

2 
1,342 
First encounter with the term, I'd like some help understanding it. I know there are several approaches, but this one...

Aug1907 07:08 PM
EnumaElish

5 
3,745 
Here's a stupid question: for a Gaussian process, are these two properties equivalent?

Oct3009 05:20 AM
Palindrom

2 
3,480 
This is probably a stupid question, but here goes: based on the covariance function of some (centered, stationary)...

Feb2010 04:04 PM
SW VandeCarr

16 
4,554 
Given a simple random walk X_n started at 1, and stopped the first time it hits zero (so it could be something like...

May910 04:55 PM
palace

0 
1,228 
Hello all,
I am deparing me with a problem or a doubt about the calculation of probabilities in one matrix.
I...

Mar607 08:23 AM
Paixao

0 
1,101 
How to define relationship between two sets (mathematics)?
Please, let me make an assumption here.
Assumption : We...

Mar2311 12:25 PM
Stephen Tashi

1 
2,162 
I want to know what is the meaning of percentile.
what is the percentile : 23.79 means?
Please give me explanation...

Aug1911 12:26 PM
AudioFlux

1 
2,686 
is it true that:
\partial(A\cup B) = (\partial(A)\cap \mbox{int}(XB))\cup (\partial(B)\cap \mbox{int}(XA))
?...

Sep1105 10:47 AM
painfive

1 
4,037 
Let X1 and Y1 be two random variables. We have Cov(X1,Y1) = 0. Does this extend to any transformation X2 = g(X1) and...

May1313 10:14 AM
Stephen Tashi

2 
432 
I have two sets of deterministic numbers, collected in the two vectors: x= and y=. My (determinstic) theory says that...

Nov211 11:02 AM
Stephen Tashi

1 
966 
Let's say we have a cumulative distribution function (cdf) G and random numbers v1 and v2.
The definition of strict...

Nov911 06:23 PM
chiro

3 
1,596 
I have N random variables (x1,x2,...,xN) following a Dirichlet distribution with parameter vector (1,...,1). That is,...

Apr3013 04:37 AM
PAHV

0 
380 
Let x(1),...,x(N) all be independent uniformally distributed variables defined on (0,1), i.e. (x(1),...,x(N)) ...

May1013 01:55 AM
chiro

5 
677 
A Binomial distribution has a standard normal limiting distribution, i.e. (XE)/se(X) > N(0,1), where X is the sum of...

May2213 03:27 AM
PAHV

2 
597 
Hi,
I would like to solve this version of the unfair coin problem.
The coin has a probability p for head and 1p...

Aug1709 03:35 AM
pagheca

2 
2,697 
I know this might be really simple, but I get easily confused.
CASE 1.
I have a bag with eight marbles, one of...

Oct606 07:51 AM
Paddy

2 
1,323 
Hi everyone, very excited to be here and this my first post.
I have a question about data fitting by using least...

Aug511 03:52 PM
mathman

1 
1,472 
Hi,
Say F:A>A where A is a metric space and F is onto. I think it should be true that this implies that F is also...

Sep2709 09:08 PM
HallsofIvy

7 
3,240 
I am starting a project on signal detection theory (cognitive focus), and working with a winbugs expansion in matlab....

Jul114 10:00 AM
scinoob

1 
2,679 
I understand how using classical or bayesian statistical inference os often very helpful for solving information...

Jul214 07:10 PM
marcusl

1 
2,500 
Hi i am currently doing a project and I am taking as input a set of X and Y variables.
I have implemented linear...

May2709 12:40 PM
pablo26

2 
1,032 
This is the QQPlot of a data. What can be inferred from this plot ?
(Tested against Normal Distribution)
QQPLOT 1 :...

Sep2712 04:06 AM
paawansharmas

2 
745 
My doubt is that whether we can apply nonlinear smoothing to a almost linear data ( without one or 2 discontinuity)
...

Apr613 02:53 PM
ssd

4 
511 
Hi there!
I'm working on a random walkproblem my professor gave me.
Given a MC with the following properties:...

Oct1412 03:26 PM
Paalfaal

2 
718 
It'd be great if anyone can tell me how to work these kinds of function and induction problems. Don't worry, these are...

Sep3007 10:19 PM
p4nda

0 
2,191 
I need help on converting these to the correct logical notation form using only the propositional connectives and the...

Dec807 09:03 PM
KingOrdo

8 
3,507 
Suppose that f:\longrightarrow{\mathbb{R}} is a function such that f(.,y) is constant for almost all y, and f(.,y) is...

Jan1810 11:13 PM
p33rz

0 
709 
Hi, I've been trying for 3 hours to solve this proof using identities. I can't seem to get it.
Can i get a little...

Apr2411 03:52 AM
tinytim

9 
5,167 
Hi,
I'm in need of a book recommendation :smile: .
As a practicing physicist I get to use some statistics now and...

Jan1708 11:43 AM
EnumaElish

1 
3,345 
I've read (and I've been told in lectures) that each graph (let's just say a combinatorial graph) corresponds to a...

Aug1706 10:11 AM
AKG

10 
1,440 
Does the choice function let me choose exactly one element from a set? The set which I am choosing from must be the...

Oct406 02:43 PM
CRGreathouse

73 
6,543 
I have 6 years of data which has both a 3month and a 12month seasonality, it exhibits a trend and is very noisy.
...

Jul711 12:17 AM
Oxymoron

0 
715 
So here is the problem:
Now what seems logical to me is first choose 1 of the 10 nonperforming and then choose...

Jan911 10:58 PM
mXSCNT

3 
2,775 