# All Questions

79 views

### Is it ok to post questions where you want to have your calculations checked by someone?

I am always second-guessing my calculations and to be honest multivariate calculus is not my strong point. Is it all right to post questions where you have done the derivations but would like more ...
91 views

### I attempted to make a FAQ-style question; does it make sense?

There have been several discussions on meta about how to organize frequently asked questions, and one idea is that one can simply write and answer such a question, creating a thread that can later be ...
80 views

### Is it appropriate to offer a second bounty when the first one has expired with no answer?

I'm wondering if it's against site rules or some unwritten stats.stackexchange.com etiquette. If it's not I'm wondering if it's considered to be appropriate (in the sense of wise) to make a second ...
66 views

### Error in the suggested edits review queue

For some time now I've had problems with rejecting suggested edits in the suggested edits review queue. Usually the majority of edits is actually an improvement but when the exceptions occur the ...
132 views

### Are mathematical optimisation questions on topic?

I asked about integer programming before on CV and it was locked as off topic. I'm unable to find a site dedicated to math programming and optimisation on stack exchange. Any one has idea?
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Reinforcement learning is part of ML and I know ML is a good topic here. However, I know there is a data science and a computer science site (and maths etc). I was wondering, where would a ...
142 views

### Does it make a sense to create the reference questions for popular topics?

There are topics which keep coming back in different forms such as normality testing of random variables. I thought maybe it makes sense to create a question with the best possible formulation, then ...
84 views

### Community Promotion Ads - 2015

The dawn of a new year, 2015, now approaches, or has already approached, either way it means that it is now time to reset our Community Promotion Ads! What are Community Promotion Ads? Community ...
40 views

### Managing different accounts in Cross Validated

I have an account in Stack Overflow and as well in Cross Validated with different user id. Is it possible to link the two accounts from different user ID? If yes , then how to link both the accounts ...
111 views

### Questions asking to check answers to end-of-chapter exercises. Appropriate or not?

I like to answer end-of-chapter exercises in various econometrics textbooks. Most of the time, there's no solution manual for me to check my answers. I wonder if it is appropriate for me to post such ...
112 views

Today I found something strange, a question that is marked as a duplicate of another question that is closed as off-topic (while IMHO it was not off-topic, but that is a meta off-topic comment in ...
171 views

### Am I abusing edit history by using it to hide code for a plot?

Sometimes code is an important part of an answer. Other times, code is interesting and potentially useful to others, e.g. how to construct a plot, but doesn't help the OP in answering their question. ...
114 views

### Is it okay to edit the title of a question to make it broad enough to fully encompass an existing/accepted answer?

I know that people here are very squeamish and punctilious about editing questions of others, and rightly so (see editing is not rewriting). But here is one particular situation that I would like to ...
115 views

### What is our policy on merging duplicate questions?

Sometimes a duplicate question gets an answer before it gets closed as a duplicate. In some cases this answer is either better than the answer(s) in the "main" question, or at least adds something ...
179 views

### Let's curate “What's a real-world example of “overfitting”?”

The following question was recently asked on the main site, and quickly showed up on Hot Network Questions and gained many views. What's a real-world example of "overfitting"? Let's ...
82 views

### CrossValidated should not use C.W. as a rep-denial mechanism or for “soft-close”

I've noticed that community wiki status is sometimes applied forcibly to posts that moderators judge are not quite a good fit for this site -- too broad, too open-ended, or too likely to attract ...
95 views

### Shouldn't we merge [definition] into [terminology]? Please vote

I think whatever the difference between definition (60 questions) and terminology (247 questions) might possibly be, in practice these tags are used interchangeably. Therefore I suggest hard-merging ...
53 views

### Why do I see some questions with a blue background?

I just noticed that in the "Questions" view, I see some questions with a blue background, e.g., the first one here: Is this some new feature?
193 views

### Why was an answer considered off-topic and when it was deleted?

One of my recent answers got deleted while it got scoring of +12/-2 and for some time it was the accepted answer. I would consider this scoring to be rather positive. The answer that got deleted ...
145 views

### Best practice: How to request clarification from the author without 50 rep to comment?

I'm new to Stack Exchange and want to answer questions, but without 50 rep I can't post a comment asking the OP for clarification. Is there a clear guideline for what to do in this situation? (If ...
271 views

### How does Stack Overflow actually manage to work given ~100x higher traffic than here, and what can we learn from it?

This question is inspired by @Glen_b's worry yesterday that we [are] seeing a dramatic drop in answers per question and is also related to my own question from almost a year ago about How not to miss ...
139 views

### When should answers be self-deleted?

I'm new here. Yesterday (my time) I answered this question. In the subsequent micro-discussion that took place in the comments, discovered that I had, in fact, misread the intent of the question, and ...
434 views

### CV and Data Science: semi-identical twins?

I would like to reopen the discussion regarding CV and the Data Science beta. This question is related to this previous one: Data Science SE but now with a better view of where Data Science seems to ...
267 views

### CrossValidated vs DataScience: what is different? [duplicate]

Probably it will be off-topic, but anyway I really want to know the difference between this forum and Data Science forum? The both communities are the subparts of StackExchange and at the moment I ...
40 views

### Economics.SE has entered Public beta

The second attempt to launch an Economics.SE site has gone into public Beta. On-topic there are of course Econometrics also, so if you hit on an econometric question on Cross Validated that rests ...
48 views

### Meta CV tag - [statistics] vs [site-statistics]

A recent suggested edit to the statistics tag wiki (and excerpt) came up. The change was to make it explicitly for discussion of statistics relating to activity ...
433 views

### Are we seeing a dramatic drop in answers per question?

From time to time I look at CV site-related stats of various kinds in various places. I was alarmed to look at this query on Stack Exchange Data Explorer (SEDE), Which shows a dramatic drop in the ...
61 views

### Inconsistency with closure and migration

There were two very similar posts on CV - this and the one it (almost) duplicates (at least, if you count the Q in comments, it's a duplicate). I marked the linked one as a duplicate and was in the ...
84 views

### My on hold question needs improvement

Asking about my On-hold question, What online tools to DIY-anonymize user names (no PII concern) I freely admit my question is naive in comparison to the included linked post. However, when I wrote ...
230 views

### Ways to integrate CV into Intro to Biostatistics curriculum

Disclaimer: I have read Using CV as part of a statistics course and believe I am asking a separate question. I teach graduate Introduction to Biostatistics (for non-biostatisticians). I try to give ...
78 views

### How to get an independent review of my article?

I am writing my first paper on Machine Learning. I worked on a problem, took the results, and wrote the paper. I discussed the results with my teachers and seniors; they said it looked fine. Now I ...
305 views

### Should Cross Validated participate in the 2014 “Winter Bash”?

For the third year running, the Stack Exchange team is organizing a "Winter Bash". Users earn "hats" for their gravatars by completing novel tasks (analogous to badges). Certain specific actions will ...
99 views

### Reopening and migrating a valid coding question from Crossvalidated to Stackoverflow

I have come across a vibrant question - how does one visualize results of post hoc Nemenyi tests - on Crossvalidated. This question is often raised in my institute and by students or peers at ...
223 views

### How can a non-expert user decide which of multiple, highly different, answers to select?

This is something I've experienced several times, but it was brought home to me most clearly by my most recent question: How can I best deal with the effects of markers with differing levels of ...
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I just received notification that I have earned the Talkative Badge for posting 10 messages in Cross Validated chat rooms with one or more of them starred. I can recall only one message that I have ...
77 views

### Is it ok to ask for guidance on my research project?

I am a novice in statistics and would like some guidance in data analysis for my research project. I just want to make sure that it is ok to post my research question, method, and ask the community ...
118 views

### Is there a way to unflag?

I incorrectly flagged a post (simply caused by me being especially unobservant) before realizing I should have just voted-to-close (which I then did). Is there a way for me to unflag, so I don't ...
388 views

### Is there a way to protect against unreasonable downvoting

I have been downvoted on 5 answers this morning, the downvotes occurring in a batch with no comments left. The obvious conclusion is that some user decided for whatever reason to pick on me. Can you ...
121 views

### Is it possible to change accidental reviews for a short time after the review?

Often I visit CV via my mobile phone because during the day I am out for work, etc. With the smaller screen and the imperfections of a touch device I have experienced a few instances where I approved ...
143 views

### For “obtaining specific datasets” questions, let's recommend OpenData.stackexchange.com

Many of the questions closed with the reason "obtaining specific datasets" would actually be good questions for Cross Validated's new little brother: http://OpenData.stackexchange.com When closing ...
40 views

### Question about the use of statistics language on CV

This question is about the use of statistics language on this website. I've developed a set of features. Do I now "assess the effectiveness of these features in classifying data" or "assess the ...
70 views

### How to print a Cross Validated question or answer?

While I respect, laud and enjoy Cross Validated questions' and answers' palimpsest-like qualities of being a dynamic and living documents, I have a need to print (or save to PDF) a static snapshot of ...
416 views

### Should we make it clearer that there's no need to apologize?

Often - sometimes several times a day - I see questions that open (or occasionally close) by apologizing for the poster's ignorance or for asking a 'basic' question. Firstly, there's no need to ...
182 views

### Using Cross Validated for a “pre-review” of an Idea that might be suited for a publication

Let's say someone has an idea related to statistics, or for that matter another field, in which that person is not an expert. The idea works better than competing approaches found in literature, but ...
73 views

### Question wrongly marked as duplicate?

This question was marked as a duplicate of this question. However, they are not asking the same question, and I think that unless the answers at the supposed duplicate are altered to respond to this ...
105 views

### OK to close homework-help scans as “unclear what you're asking”?

It doesn't immediately grab me why such low quality homework help problems should be closed I need help with this estimation However, we probably agree this post should be nixxed. I think that ...
128 views

### Is it okay to re-tag a lot of old questions when appropriate ([kernel] $\to$ [kernel-trick])?

kernel and kernel-trick are two different tags on CV, with the first one reserved for kernel smoothing and density estimating, and the second one for kernel trick in maching learning (kernel SVM, ...
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### Notify a user in a new question

I just posted a question inspired by an earlier question/answer pair in cross-validated (CV). I think this is part of the intent of the site and a delightful phenomenon. There were folks involved in ...