# All Questions

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### Tags: Bayes-network vs. Bayesian-network

I have noticed a user actively changing bayes-network tag into bayesian-network. Both tags have approximately the same number of ...
55 views

### Tag proposal: [cronbachs-alpha]

Cronbach's $\alpha$ is an estimate of the reliability of a psychometric test. It's admittedly rather field-specific, and I don't think many people outside of psychology or psychometrics have ever ...
70 views

### I read a question sometime ago but I can't find it anymore

I was looking for a specific question related to the probability integral transform, i.e., the theorem which states that if $X$ has a continous distribution, then $F_X(X)$ has the uniform ...
92 views

### The [error] tag and its wiki

The error tag currently has the following tag wiki excerpt: The error of an observed value is the deviation of the observed value from the (unobservable) true function value. Do NOT use this tag ...
171 views

### Is the CrossValidated impact “people reached” formula generally available?

This may be proprietary, but does someone know how they translate page views of questions and "highly ranked" (what does this mean?) answers into 'impact'?
91 views

### Suggestions for improving mixed models question

When are zero-correlation mixed models theoretically sound? I think the above question is well formulated and worthwhile. However, it didn't get any attention, so I put a bounty on it. The bounty ...
58 views

### New tag MAE (related to MAD)

In forecasting, there is a very common point forecast accuracy measure, the Mean Absolute Error (MAE) or Mean Absolute Deviation (MAD), which simply calculates the mean absolute difference between ...
72 views

### Do we need both [forecasting] and [prediction] tags?

I do not see a clear distinction between forecasting and prediction tags. Should they be made synonyms? Or should the distinction be made clearer (e.g. by expanding the currently very brief ...
64 views

### Bug in displaying the list of review badges

Badges such as "Custodian" (bronze) to "Steward" (gold) are awarded for each of the six review types. However, in browsing the list of users who have been awarded a badge, CV reports the same users in ...
82 views

### Should I edit a Community Wiki answer that seems wrong?

This answer just seems plain wrong to me. http://stats.stackexchange.com/a/501/39632 The question states that there are more features than observations, so backwards stepwise selection (which would ...
88 views

### What is [scoring] tag about?

I just noticed that we have scoring tag -- what is it about? It does not have description. It's content is pretty chaotic: from Good books/papers on credit scoring (my initial guess for what is it ...
42 views

### In comments, why do SE-origin URLs not render as the title automatically?

In many places on SE, if you paste the URL of a question or answer, it is displayed as the title of the question/answer, rather than the URL. After I noticed this, I expected it to be the case ...
137 views

### The scourge of the Time-Series Tag!

In the Stats.StackExchange community, there's one tag called 'Time-Series'. About 16.2% of CV questions are related to Time-Series, so I would think that only a negligible part of these would not get ...
44 views

### Proposing research collaborations through Cross Validated?

Besides enjoying Cross Validated to understand concepts or methods that I am not thoroughly familiar with, as I have already done recently, I was wondering if we can exploit in a constructive fashion ...
203 views

### How many questions about cross-validation do we honestly need?

We have a wealth of questions about cross-validation, such as Cross-validation including training, validation, and testing. Why do we need three subsets? What is the difference between test set and ...
27 views

### Increasing visibility to questions by upvoting comments = cheating?

I have begun posting questions in CrossValidated and recognized that many go almost unnoticed. I realized that by periodically upvoting the corresponding comments the question may reappear as ...
291 views

### Would you recommend phrasing questions controversially to provoke a response?

For example: "Why are small sample sizes better?" instead of "Why do small sample sizes give more significant p-values for rare events?": I tried this just as an experiment because I wasn't getting ...
55 views

### Feature allowing to indicate answerer's confidence level

Sometimes I write answers and use fancy Greek letters which fools naive people to think that I am a Mathematician (which I am not). So I sometimes put a disclaimer in bold (e.g. Disclaimer: I am not ...
153 views

### Is there an ideal time of day to ask new questions?

Or more specifically, is there a peak time of day when a greater proportion of newly posted questions tend to get answered? When are the experts online and actively answering? And conversely, are ...
125 views

When users struggle for appropriate jargon, I often misunderstand what they're after. I feel like if I had a dental appliance, I could encourage more precise questions on this site. Nonetheless, I do ...
121 views

### Tag-candidates for removal

We already have a thread for proposing candidates for tag synonyms, but there doesn't seem to be a similar thread for proposing tags for deletion. Similarly to the "synonym" thread, let's use this one ...
385 views

### What are your thoughts on users who ask too many questions?

It seems that some folks are asking large amounts of questions. I remember seeing one fellow ask over 10 questions in an hour! This is getting outrageous, should we introduce a limit on the maximum ...
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For the past few weeks I've been signing in every day to check various posts and noticed that I was getting close to an Enthusiast Badge, having accumulated 21 or 22 days out of the necessary 30. I ...
58 views

### Why do so many questions on Cross Validated continue to go unanswered? [duplicate]

Have a look here and scroll to the bottom. You'll notice that (as of the day of this post) Cross Validated has the 3rd worst record for percent of questions answered among SE sites. Only 61% of ...
133 views

### Closed question - discussing differences between statistical procedures

This question was originally on stackoverflow and I flagged it to be migrated to this site. The question is framed in terms of choosing between two different SPSS procedures, which is a statistical ...
30 views

### Show reason for closure when reviewing questions for reopening

It would be helpful if the reopen review queue always explained why the questions were initially closed. When reviewing close votes, the system shows the reasons other reviewers gave for closing the ...
95 views

### Might someone explain why this is marked as duplicate?

This has been marked a duplicate of this. The former concerns the posterior of a normal likelihood with known mean and gamma precision; the latter, the conjugate prior of a gamma distribution. In ...
272 views

These two threads seem closely related: What are alternatives to p-values - an earlier thread, which originally was asked from quite a "software implementation in R" point of view, but received a ...
56 views

### Can I post a statistics related question here that got no answer in 'Mathematics'?

A few months ago I posted a question over at http://math.stackexchange.com/. The question is related to error analysis, and it got no answer over there. Is it acceptable to re-post it here?
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### What is the difference between our hypothesis-testing, statistical-significance, and p-value tags? Do they need to stay separate?

Two very popular tags are hypothesis-testing (3.4k questions) and statistical-significance (2.4k questions). These two concepts are very much related, and whenever I happen to edit a question that ...
49 views

### Is there an area to ask a question about how a company uses data science?

My question is: What data science tools does Khan Academy use to track student performance? More specifically: I'm curious as to how they track their performance in relation to a student that is not ...
72 views

### Follow-on to a question with too much scope

I am really enjoying working through the problem here. I could write a dozen articles for my question. It is a good question, but it is extensible. It addresses a big area. Do you recommend that ...
208 views

### How far would this question about dependence and correlation have to be edited to not be deemed a duplicate?

We have a thread, Real life examples of difference between independence and correlation, which currently reads: It is well known that independence implies zero correlation but zero correlation ...
56 views

### Is it okay to add the bayesian tag if my answer is Bayesian? [duplicate]

I have given Bayesian answers to questions that do not have the bayesian tag. Sometimes my Bayesian answer is accepted and there's not tag to lead anyone there. Is it ever okay to add the tag? Do I ...
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### Is it okay to substantially edit (i.e., completely rewrite) my answer?

I answered a question recently and then realized I needed to add material to provide a full answer, which I did. (I did this after the answer had received an upvote. I don't know if that's an issue.) ...
52 views

### Migrating programming questions to StackOverflow

Yesterday, I asked this question: Train test split in r's caret package which was promptly downvoted and closed due to being off topic. I understand that, and I made a mistake to post it. ...
198 views

### A user insists on making a detrimental edit to one of my posts. What do I do?

Twice today a user has taken it upon him/herself to edit my post to remove what I think is a useful piece of visual information (the cover of a book which also has a graph that I make repeated ...
110 views

### Should we have a tag for the coupon collector's problem?

The coupon collector's problem is a well-known example in probability. Searching the site for coupon is:question suggests we have about a dozen posts on it, but ...
148 views

### Operations research questions---where to ask?

Where should questions about operations research be asked? Is cross validated appropriate, or are other sites within SE network better suited? I have had a look at ...
147 views

### Is it acceptable to edit other people's answers to include new information?

Recently I have noticed a few suggested edits that included adding new information to an existing answer. Is that acceptable? My intuition is that edits should not add new information that the author ...
235 views

### GINI score - what does the distribution of reputation across CV look like?

Background: I was on Stack Overflow and they seem to have a lot more traffic and users there. It seems to make sense to me because knew many more CS majors than stats majors in college. This made me ...
137 views

### Migration that went wrong

Recently we migrated question about repeating simulation function in R to SO. Initially I voted to migrate it to SO, however then it got quite nice answer by Xi'an that focused on its statistical ...
98 views

### What should we do with the ambiguous [Pearson] tag?

Our pearson tag (220 questions) is ambiguous and seems to be used inconsistently: it can refer either to Pearson's correlation or to Pearson's chi-squared goodness of fit test. I think it should be ...
130 views

### Rank-related tags are an enormous mess

Our rank-related tags are an enormous mess. Unfortunately, no simple synonymizing or renaming can help here, and ideally somebody should go through all the threads re-tagging them as appropriate ...
169 views

### Overzealous marking as duplicate

I think it is quite obvious (so long as you read it in its entirety) that this question has incorrectly been marked as duplicate. It is worth reading the comments too. EDIT: Just to be clear, my ...
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### Is it wrong to edit badly formatted questions? [duplicate]

I'm wondering if it's OK to edit questions that do not format or punctuate text well.
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### Can't see rendered MathJax [closed]

I'm trying to see the MathJax equations but all I can see is the  with the text in it. What's happening ? Do I need to install a plugin? I'm currently using ...
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### Practical NLP questions CrossValidated, Data Science, or Neither [closed]

I have a very specific question that might actually be rejected at both places. I, for one, have tried to push through an NLP site on StackExchange but such approaches tend to be merged and don't ...