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Questions which are just photographs of your homework sheet or old exam paper Why these questions are closed We have a policy on self-study questions, which says that: It is okay to ask about homework. Homework is included in this self-study tag. This site exists to help people learn and provide a standard repository for questions in statistics and ...


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Questions which contain a large number of undefined abbreviations or acronyms One of our close reasons is "Unclear what you are asking." I'm comparing an XYZ model to a YYZ model using the ABC and DAR statistics. Using the LLV test on the OOP dataset, my results are not good. Perhaps I failed at TTR? CrossValidated is a site for everyone, not just ...


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Not carefully developing a question to ask of your data As Scortchi put it (his ellipsis): […] How can I analyze these data? This quip exemplifies questions that describe a dataset and then ask what data-analytical, statistical, mathematical, programmatical, or machine-learning-ical tools to throw at the data—"What do I do with the data?"—without being ...


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"I am working on my dissertation..." Why is this a negative point? It may seem entirely natural as a lead-in, but it's a bad start. We think statistically (what else did you expect?). A large fraction of questions starting like that turn out to be poor questions. Your question isn't doomed by such a start, but you should want to create a good first ...


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I personally like the "questions": I have a dataset consisting of vectors of numbers and I want to predict values from other vector of numbers. Any help will be appreciated. Thx Why it gets closed? First of all, what is the question in here? Is there any? Nothing was asked, so it's hard to answer anything.


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MATLAB MATLAB (MATrix LABoratory) is a multi-paradigm numerical computing environment and fourth-generation programming language. It is developed by MathWorks. MATLAB has a free, open-source counterpart named Octave that is distributed on GNU-GPL license and offers access to a subset of MATLAB's original functionality. MATLAB questions get routinely ...


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QUESTIONS THAT ARE TYPED IN ALL CAPS Why these questions are closed Western languages differentiate between uppercase and lowercase letters. There are commonly agreed rules on when to use which. These rules are well ingrained in almost all speakers of English. The result is that, yes, we can read text that is in ALL CAPS, but it requires additional effort, ...


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What was the chance of this strange personal coincidence? I am perplexed; I just ended a relationship with a guy and 1 month later I meet another guy who has the same first name and the same first initial in the last name. Example : Torrence Tolley (1st guy) & Torrence Tiffen (2nd guy). What is the universe trying to tell me? Yes, that's a real post ...


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Julia Julia is a new language with MATLAB-like syntax but Lisp-like semantics and a Lisp-style macro language. Julia has growing capabilities for statistics, and, its main advantage, is blazing fast! To learn about Julia start with http://julialang.org/ and, especially, http://julialang.org/community/. Julia has several online discussion groups ...


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It begins "How do I use SPSS to..." I was advised to do [procedure X] in SPSS. Here's a dump of the output. How do I interpret it? Yes, I am singling out SPSS because it is prominently associated with bad questions. Of course there are thoughtful SPSS users out there, newbies and students included. Please formulate your question in a way that ...


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A post that shows no concern for its readers does not deserve answers. Teh speling en gramar r 2 terse and so ful of misstakes that we can scarsely reed the queston. Its ovbious teh poster hasnt even red it theyselfs! We should be sensitive to people who are not native writers of English and work to accommodate them. Even so, there's a fairly clear line ...


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[We often don't close these - but I increasingly tend to think we should put them on hold until clarified] The title is: What test should I run? but which contain no indication of any question of interest whatever, instead focusing entirely on a description of the data (and that usually omitting important information), as if the form of the data were the ...


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Duplicates or near duplicates This site aims to collect questions and high-quality answers that are useful not only for the OP, but also for other readers who face the same question. This site exists for over 5 years and has seen something like 83,000 questions (as of July 2016). So if you have a question that, for example, relates to a key topic of an ...


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Stan Stan is an open-source, probabilistic programming language implementing full Bayesian statistical inference and penalized maximum likelihood estimation. Stan has very good documentation (including detailed Language Manual), github Wiki page and active Stan users mailing list.


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This reply illustrates a search strategy by means of an example. The strategy consists of an iterative procedure whose objectives are, in order, Discover appropriate key words and search terms to include. Find questions and answers related to these terms. Mine them for related terms (which might be new or unfamiliar: that's ok). Refine the search by ...


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Writing good titles Mark Harrison's CW answer on Meta Stack Exchange brings a list of useful hints for writing meaningful Stack Exchange titles. These are an expanded version of that guidance. 1. Make the topic stand out. This is the most important filter on a question. People scan content in the front page very fast. Users need to know what the question is ...


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How do I interpret this output? This kind of question consists of copying and pasting some output from your software and then asking us how to interpret the output. (In really bad cases, the output isn't even formatted to respect line breaks or use of fixed width fonts and thus to echo the layout in your software, so it's essentially unreadable too.) Why ...


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Posting a question as an introductory foray into conversation Hey guys! Well it seems to me like like your doing a lot of test anxiety around here. LOL Idont really understand this stuff, but i want to learn! Anyway I was just wondering if my [vague ideas about stats],or really big data/machine learning (haha jk) are even [possibly to meaningfully ...


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Can anybody help me? The kind of question here often starts "I am an X working on Y" with perhaps a little more detail, and then ends with an open request for help. Why is this a bad question? Isn't the point of CV to offer help to those who ask? What's usually bad about this is that it confuses the site with a helpline. A helpline I'll define in the ...


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JAGS JAGS is Just Another Gibbs Sampler. It is a program for analysis of Bayesian hierarchical models using Markov Chain Monte Carlo (MCMC) simulation not wholly unlike BUGS. JAGS was written with three aims in mind: To have a cross-platform engine for the BUGS language To be extensible, allowing users to write their own functions, ...


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Minitab Tutorials for Minitab 17 and Minitab Express with examples and illustrated instructions. Free assistance/support directly from developers (e-mail and phone call). Knowledgebase/FAQ. Learn more about Minitab on Wikipedia


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I just invented a square wheel: is it a good idea? We often have threads where someone claims to have just solved some basic problem (usually with an equally basic solution, like "you just need to add 42 to the output"). Those questions often get closed, but sometimes they get answered. The answer usually points out where the OP made a mistake that ...


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Use tags Tags allow us to sort and filter questions into categories that we are interested in. If you tag your question well, you will increase your chance that an expert in your particular problem will see your question. When you are done assigning good tags, don't post your question yet. Instead, search through previous questions carrying your tags. You ...


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JMP JMP is a desktop statistical exploration tool from SAS. The primary source of online support for JMP is the JMP User Community site which hosts discussion forums and a file exchange for add-ins and data sets. Other online resources include JMP documentation, a semi-technical JMP blog and weekly live webcasts.


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Questions that provide no information whatsoever. My favorite of these (which I think was on another list) is: "I have some data. Can I do a t-test?"


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Fortran Fortran is one of the main languages in which statistical algorithms have been coded. Comp.lang.fortran is an active Usenet group. Stack Overflow often has Fortran questions. The Open Directory has links to many Fortran codes in statistics and econometrics.


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Wizard Wizard is desktop statistics and data visualization package for Mac OS X. The primary support channel is the Wizard User Group hosted on Google Groups. Disclosure: I am the developer of the software.


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Weka Weka is a collection of machine learning algorithms for data mining tasks. The algorithms can either be applied directly to a dataset or called from your own Java code. Weka contains tools for data pre-processing, classification, regression, clustering, association rules, and visualization. It is also well-suited for developing new machine learning ...


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Data is included... as a screenshot (or scan) We are often better able to help you if we know the data you have. However, a screenshot (or scan) of your data is usually useless. Please don't expect us to type your data off ourselves! At the very least, paste your data into your question as actual text and numbers. If you use R, paste in the output of dput(...


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Answer as soon as possible When I see this in a question I have an urge to close the question even without reading further. I do read further and usually close the question, because in most cases those are homework assignments that someone wants us to solve for them because they didn't bother and the deadline is coming. Those are sometimes also not homework, ...


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