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Set Theory, Logic, Probability, Statistics

- Fundamentals: Set theory, logic and proofs. Probability and statistics
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:25 AM
1 31,749
Just refreshing my understanding of measurable cardinals, the first step (more questions may follow, but one step at a...
T 01:32 AM
0 30
Imagine points in a plane with a uniform density. To use a simple model, consider just a finite region such as the...
Y 09:55 PM
2 81
According to wiki: The probability for the waiting time to observe...
Y 06:32 PM
0 57
Hi everybody, I apologize if this question is too basic but I did 1 hour of solid Google searching and couldn't find...
Y 04:07 PM
2 65
Boolean Algebra is a well known field of study in mathematical logic. In Boolean Algebra (BA), a statement can be...
Y 04:03 PM
18 520
I have some data from gas emission samples, part of the data was sampled in a region with a characteristic A and...
Y 09:50 AM
5 169
I have 3 fair dices. The probability of 2 of them lying in the same number without the 3rd doing so is given by...
Y 09:38 AM
9 357
Prove Russel's paradox by contradiction and what does it tell us about sets? I tried doing it like this and I am not...
Jul27-14 10:52 AM
Stephen Tashi
5 593
From what I understand, and please correct me if I'm wrong: An "Argument" in sentential logic is a set of...
Jul27-14 03:07 AM
7 2,649
I really like the derivations here Could...
Jul25-14 06:11 PM
0 260
I've been figuring out the use of the nonparametric bootstrap and if I understand correctly, this is the procedure: ...
Jul25-14 10:31 AM
Stephen Tashi
3 572
I thought I understood all the theory quite well and sat down to begin coding until I realized that calculating a...
Jul25-14 08:36 AM
4 252
Let's say I'm applying electrical currents to a certain part of a human test subject and measuring certain deflections...
Jul24-14 10:20 PM
0 268
Suppose I have around 20 exposures that potentially affect an outcome and I want to see which exposures have bigger...
Jul24-14 09:14 PM
3 263
Three statements: 1) I will take a shower if the water is warm. 2) I will take a shower unless the water is cold....
Jul22-14 04:04 PM
14 830
Consider two independent random events A and B. Is the event A/B independent from event B? My real problem stems...
Jul22-14 02:22 AM
19 1,456
I ran a multinomial logistic regression on some likart data (1-5 survey response questions). For some background, the...
Jul21-14 03:58 PM
2 597
Hello, From an offset zener diode breakdown circuit, I have collected a set of bytes from an ADC. The values...
Jul20-14 06:06 PM
8 800
The name in the title is probably not what it's called but it so similar that I chose it anyways. This is a problem...
Jul20-14 04:50 PM
14 3,102
Suppose we have a class equivalence relation ~ on a proper class C. Can we form the class of equivalence classes C/~?...
Jul19-14 09:21 PM
10 1,400
hi pf! so i am going to take the skewness and kurtosis of a sample. however, if i already have a pdf, is there...
Jul18-14 07:07 AM
Simon Bridge
4 1,038
I am reading Introduction to Set Theory (Jech & Hrbacek) and in one of the exercises we're asked to prove that the...
Jul18-14 01:05 AM
8 925
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...
Jul17-14 10:39 AM
Stephen Tashi
6 1,601
So, today we were studying the introduction of probability. For me it is fairly simple (for now). My question is...
Jul15-14 09:45 PM
4 1,545
I am trying to derive the Probability distribution of Geometric Brownian motion, and I don't know how to find the...
Jul15-14 01:56 PM
Greg Bernhardt
1 1,684
Okay, so I guess my first question is if the main utility of the normal distribution ##f(x)## is to provide a...
Jul14-14 04:01 AM
2 1,915
Consider a one-dimensional random walk on the integer lattice, starting at 0. The next step is decided to be +1 or -1...
Jul14-14 03:26 AM
4 2,076
So I take <z10, +> this to be the group Z10 = {0,1,2,3,4,5,6,7,8,9} Mod 10 group of additive integers and I...
Jul12-14 07:08 PM
5 1,983
I've been thinking about the Central Limit Theorem and by my understanding it states that the sum of randomly...
Jul11-14 01:12 AM
4 1,532
I'd like some help understanding a proof, from Properties are introduced, which a...
Jul9-14 01:22 PM
5 2,831
Hey! I'm working with some regression related stuff at the moment and i'd need some help with multiple variable...
Jul7-14 07:42 AM
4 2,877
I am studying an article which involves stochastic variables
Jul6-14 04:30 PM
1 1,673
I understand how using classical or bayesian statistical inference os often very helpful for solving information...
Jul2-14 07:10 PM
1 2,143
I have a set of scored items with the scores in the interval . Roughly speaking the distribution of scores is about...
Jul2-14 08:46 AM
2 2,458
i am a complete nooby in statistics, therefore the question i am about to ask may sound very unprofessional warning :)...
Jul1-14 10:15 PM
Greg Bernhardt
1 2,086
I am starting a project on signal detection theory (cognitive focus), and working with a winbugs expansion in matlab....
Jul1-14 10:00 AM
1 2,260
When you have a graph like this one here: Of course...
Jul1-14 08:45 AM
Greg Bernhardt
1 2,026
Hello again pf! i was wondering if any of you could help me with the intuition for the following structure...
Jul1-14 08:45 AM
Greg Bernhardt
1 2,187
I think the first thing that is confusing me is the terminology. There are too many similar terms (e.g. probability...
Jun30-14 09:00 PM
16 2,685
I try to understand the following equation but I can not. I have basic knowledge about Bayes rule and joint...
Jun30-14 03:59 PM
1 1,928

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