# Set Theory, Logic, Probability, Statistics

- Fundamentals: Set theory, logic and proofs. Probability and statistics
 Meta Thread / Thread Starter Last Post Replies Views Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions... Feb23-13 09:25 AM micromass 1 27,578 Hello, I am trying to construct a general function/method based on two sets of minimum/maximum data point... Feb13-14 06:08 PM Stephen Tashi 1 228 Hey! I've been doing some research on random walks. From what I have gathered, a random walker in 1-D will have:... Feb13-14 04:19 PM mathman 3 224 Suppose we have 2n binary choices. Then the probability of having the same number of results is : C(2n,n)/2^(2n) ?... Feb13-14 02:36 PM jk22 2 197 There are various zero-one laws (e.g. Kolmogorov's) that assure us that certain measurable events have probability... Feb13-14 11:51 AM eigenperson 1 201 Hi, English is not my native language. I manage first time a competition on social media, where: 1. people bring... Feb12-14 11:42 PM Simon Bridge 7 235 In one case I get the results as a significant difference in the other with the same dana, the difference is not... Feb12-14 06:56 AM FactChecker 4 232 This is from Peter Smith's Gödel without tears. I don't agree with this. If it appears in the list of p.r.... Feb11-14 05:55 PM jgens 1 217 Lemma: If A is an at most countable alphabet, then the set A^* of strings over A is countable. Proof begin: Let... Feb11-14 02:45 PM Hornbein 4 253 Hi everyone, hopefully someone can help For an vector AR(1) model of the form y(t)=Ay(t-1) + et How does one... Feb9-14 05:20 PM FactChecker 5 294 Hello, PF! * * * In a discussion of the standard deviation of a sample in relation to the 68-95-99.7 rule,... Feb7-14 12:22 PM Hornbein 4 350 Hi all, I am reading Suppes' book on axiomatic set theory and having difficulties understanding the part on formal... Feb5-14 11:21 PM EvanOktavianus 0 213 I notice that the examples always seem to talk about linear regressions, as in y=mx +c So how I understand this is... Feb5-14 10:32 PM FactChecker 6 246 25 questions, multiple choice, 5 choices per question. Correct = 6 points blank = 1.5 points wrong = 0 points. I... Feb5-14 12:37 PM mfb 5 261 I am told that an exponential distribution is memoryless. But why aren't other distributions, such as the normal... Feb5-14 12:23 PM oneamp 3 218 What are the current capabilities of modern Theorem Provers? I know about logic/undecidability/complexity theory so go... Feb5-14 11:39 AM Hornbein 4 272 Hello, in a certain context I had to deal with a random variable Y=e^X, where X follows a standard normal... Feb5-14 10:49 AM economicsnerd 1 203 Hello, I was trying to interpret the formula of Pearson's Chi-squared test: \chi^2 = \sum_{i=1}^{n} \frac{(O_i -... Feb4-14 10:13 AM mnb96 4 319 what is gaussian function?how this is related to gaussian distribution? Feb3-14 11:42 AM Drakkith 1 229 Hi quick question. I was recently posed a question by a co-worker who saw it in a liquor store contest: 156... Feb2-14 11:44 PM Simon Bridge 12 454 I am no expert in formal logic, so please forgive me if this question sounds stupid. It's about a common pattern used... Feb2-14 10:58 AM tom.stoer 15 448 Why is it so hard to convert natural language to propositional logic. We are so comfortable in understanding and... Feb1-14 11:56 PM Stephen Tashi 2 224 “there is a disproof of me that occurs before any proof of me.” "If this sentence is provable, there is a shorter... Feb1-14 08:04 PM cragar 0 182 Hello, i was wondering if the additon formula for PDFs holds also for CDFs. Particularly, when an X event or a Y... Feb1-14 06:27 PM Stephen Tashi 11 295 Hi guys. Could anybody tell me how the Johnson distribution was derived? I have searched the internet but I couldn't... Feb1-14 10:51 AM Stephen Tashi 1 202 what is gaussian function?what are it's field of applicaton?how this function is derived,i mean what are the logical... Feb1-14 10:49 AM Stephen Tashi 1 194 This is not a homework problem. Just a curiosity. But my statistics is way rusty. Suppose a binomial probability... Feb1-14 08:12 AM PeroK 1 165 $$1.\quad p\quad if\quad q\\ \equiv if\quad q\quad then\quad p\\ \equiv q\rightarrow p\\ \\$$2.\quad p\quad... Jan31-14 10:26 PM FactChecker 4 527 Hello, I have a question to Maximum Likelihood Estimation. The typical form of MLE looks like this: X = Hθ + W.... Jan31-14 10:13 PM FactChecker 4 295 I'm writing the paper on this experiment I just did. Basically I took sets of data for two variables (x,y) and I fit... Jan31-14 09:44 PM FactChecker 2 239 Hi, I am trying to understand the degrees of freedom parameter in the Chi_squared distribution and I have found... Jan31-14 08:50 PM FactChecker 4 244 Hi Can you please help me with this problem? "What is the maximum size of a set A of logical expressions that... Jan31-14 05:16 PM Stephen Tashi 1 213 Hi, It has been a long time since I have worked with pdfs so perhaps someone can help. According to Wikipedia... Jan30-14 07:06 AM Usjes 2 221 So I was thinking what would be the chances of two players on seperate pool tables playing the exact same game of... Jan29-14 07:49 PM bahamagreen 18 653 I have a mean mu, and an exponential distribution function. How do I use a random number, generated with a PRNG, to... Jan29-14 10:34 AM oneamp 6 256 Hi, I generally know the concept of degrees of freedom based on the commonly used explanation about how using the... Jan28-14 10:59 AM Stephen Tashi 1 454 Hello everyone, I have a large number of measurements with associated uncertainties, and I know that the real... Jan28-14 10:19 AM Stephen Tashi 11 392 hey pf! can someone help me understand why a pdf is defined in the following manner: \lim_{\substack{N\to \infty\\... Jan27-14 09:18 PM joshmccraney 2 210 Hi, i was wondering if the following is valid: E = E / E, given that {x,y} are non-negative and independent... Jan27-14 06:28 PM economicsnerd 2 335 For a simple linear model: \alpha+\beta\times x=y If it is observed that y \in (-8.51,23.20) given x=4 The... Jan27-14 03:39 PM mathman 1 164 I have taken a course in probability and statistics, and did well, but still I feel that I do not grasp the core of... Jan26-14 05:33 PM PeroK 63 3,559