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

Feb2313 09:25 AM
micromass

1 
27,572 
Hello,
I have a time series of 5 years of wind speed and I would like to know how to calcule the return period for...

Dec712 12:05 PM
juan79str

0 
805 
Hi all,
I was curious about how i would go about showing that samples of a variable separated in time may have a...

Dec612 11:42 AM
X89codered89X

5 
1,105 
Is it possible to have a set that contain all the irrationals that has measure zero.
I dont know that much about...

Dec612 12:23 AM
pwsnafu

14 
1,298 
X and Y are independent, exponentially distributed random variables  with possibly different parameters
Determine...

Dec412 11:00 PM
haruspex

1 
671 
The number of end points of the cantor set double each time an iteration is performed, therefore the total number of...

Dec412 08:40 PM
bkowal

9 
1,210 
Hello,
You can use a QQ plot to visually test if 2 continuous variables are from the same distribution and you...

Dec412 01:38 PM
DrDu

4 
1,049 
Hi, I just solved a probability density function problem and the standard deviation is undefined.Does anyone know why...

Dec412 06:29 AM
micromass

3 
1,186 
text files consists of 0&1 bits. But in ASCII, Most Significant Bit(MSB) is 0, so we have more 0s than 1s. Assume...

Dec412 03:16 AM
Cylab

56 
5,033 
In my research I am working on some data (let’s call it sales data), however we almost have no information on the...

Dec312 11:40 PM
Stephen Tashi

1 
682 
So I have a research problem and I am not very good at statistics. I need to amplify a library of dna molecules with a...

Dec312 11:31 PM
Stephen Tashi

1 
711 
Hi all,
Went over this today and I'm not grasping it: why is the order type of n + ω = ω, while ω + n ≠ ω? I'd...

Dec312 05:22 PM
Glinka

4 
539 
My professor made a rather concise statement in class, which sums to this: E(YX=xi) = constant. E(YX )= variable....

Dec312 03:20 AM
Stephen Tashi

1 
797 
I think I’m a bit confused about what \alpha is. For the definition that is given, what theta really means when they...

Dec212 08:46 AM
Artusartos

4 
939 
Hi, I am trying to identify the independent and dependent variables in the following experiment:
...

Dec112 09:50 PM
bpet

1 
932 
If we have a sequence of real numbers x_{n} converging to x, that means \forall \epsilon > 0, \exists N such that ...

Dec112 09:07 PM
adnaps1

2 
773 
Dear all
I am working with a GammaPoisson mixture distribution where (and this is not usual) the support of the...

Dec112 12:07 AM
bpet

1 
881 
I understand the concept of a surjective or onto function (to a degree). I understand that if the range and domain of...

Nov2912 10:49 PM
Michael Redei

3 
792 
In proofs like prove sqrt(2) is irrational using proof by contradiction it typically goes likeWe assume to the...

Nov2912 09:15 PM
bonfire09

3 
728 
Hi,
I am looking for an introductory material on Markov Switching Time Series with a couple of toy examples maybe....

Nov2912 06:32 PM
newphysist

0 
422 
What is a measure of "jointness" of a joint distribution? Correlation?

Nov2912 03:18 PM
mathman

1 
578 
Hey, how can I run a analyse with SPSS statistics software for this data? (I am not a stats guy at all, and not sure...

Nov2912 12:09 PM
nukeman

3 
729 
Hi all,
I'm looking at the joint pdf F(x,y) = (8+xy^3)/64) for 1<x<1 and 2<y<2
(A plot of it is here:...

Nov2812 11:14 PM
Aria1

6 
1,511 
I hopefully have a rather simple question.... I am looking for the equation to calculate the probability when the...

Nov2812 08:11 PM
Mute

6 
1,304 
Hi, I have tried to calculate 200C65 on my calculator but the calculator gives an error. Do u know how to do it?
I...

Nov2812 04:26 PM
Ibix

2 
916 
I teach costbenefit analysis, which requires me to teach monte carlo simulation for sensitivity analysis. I use...

Nov2812 12:40 AM
haruspex

12 
1,826 
One of my math teachers discussed stochastic ("random") variables today. In an example, he discussed the probability...

Nov2712 10:05 PM
lavinia

4 
866 
Delete please. Got it!

Nov2712 07:51 PM
nukeman

0 
697 
http://i11.photobucket.com/albums/a179/slourg/Number11.png
Are the ones I selected right?
I only get one...

Nov2712 09:19 AM
riseofphoenix

1 
632 
I am confused about calculating errors. I have learned if you take the variance covariance matrix \Sigma_{ij} of a fit...

Nov2612 07:28 PM
Stephen Tashi

5 
1,376 
Hello folks,
I am new to this forum.
I am trying to find out which modern day games or sports apply the...

Nov2612 02:46 PM
cosmik debris

1 
745 
From a survey of paraconsistent logics, it appears to me that there are three main trends:
(1) Weaken implication...

Nov2612 02:11 PM
Preno

3 
661 
How to calculate the odds for Keno Bonus? The detail that I have is limited. Do I have to know the total ball for Keno...

Nov2612 02:38 AM
ryan8200

0 
605 
What is the difference between disjoint and independent events, how will the 2 affect calculations involving them?

Nov2512 02:40 PM
sophiebb8

9 
7,244 
If I adopt a level of significance of 5% for data which is normally distributed, and I am adopting a twotailed test,...

Nov2412 10:30 AM
nomadreid

8 
1,336 
Hey,
Let ##(f,g) \in B^A## where ##A## and ##B## are nonempty sets, ##B^A## denotes the set of bijective functions...

Nov2312 07:42 PM
Stephen Tashi

3 
1,094 
Problem:
"Let x_1, ..., x_n be i.i.d random variables uniformly on . Let X be the length of the longest increasing...

Nov2312 07:25 PM
Stephen Tashi

1 
679 
I cannot find a consistent definition of the studentized residual and the RMSEP, because I've noticed that various...

Nov2312 07:18 PM
Stephen Tashi

4 
1,573 
1.There exists an injection from A to B ⇔ A ≤ B
2.There exists an injection from B to A ⇔ B ≤ A
3.If A ≤ B and B ≤...

Nov2312 05:20 PM
lugita15

4 
898 
Hi,
I understand the mechanics of the crossed/nested models with fixed/random effects. What I am having trouble...

Nov2212 12:36 PM
Stephen Tashi

1 
753 
Hi everyone. I am currently in a club that prepares students for technical interviews for jobs such as investment...

Nov2212 12:10 PM
Stephen Tashi

2 
1,251 