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3
votes
3answers
12 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 ...
5
votes
1answer
89 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 ...
11
votes
1answer
169 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'?
8
votes
0answers
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 ...
5
votes
1answer
57 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 ...
-3
votes
1answer
69 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 ...
5
votes
1answer
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 ...
6
votes
1answer
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 ...
7
votes
0answers
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 ...
-2
votes
0answers
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 ...
10
votes
0answers
202 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 ...
12
votes
2answers
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 ...
10
votes
2answers
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 ...
8
votes
4answers
125 views

If you misunderstand the question, should you delete your answer?

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 ...
8
votes
6answers
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 ...
6
votes
4answers
384 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 ...
4
votes
0answers
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 ...
8
votes
1answer
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 ...
5
votes
1answer
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 ...
7
votes
1answer
272 views

Two threads about “alternatives to p-values”

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 ...
3
votes
1answer
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?
2
votes
0answers
42 views

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 ...
2
votes
0answers
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 ...
4
votes
0answers
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 ...
6
votes
3answers
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 ...
2
votes
1answer
51 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. ...
15
votes
1answer
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 ...
10
votes
1answer
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 ...
12
votes
3answers
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 ...
10
votes
2answers
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 ...
13
votes
1answer
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 ...
9
votes
1answer
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 ...
5
votes
0answers
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 ...
12
votes
0answers
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 ...
1
vote
1answer
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 ...
0
votes
0answers
35 views

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.
2
votes
0answers
44 views

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 ...
16
votes
2answers
274 views

What is and what should be our policy on making questions community wiki?

This recent question has just been converted into a community wiki (CW): When (if ever) is a frequentist approach substantively better than a Bayesian? I understand that the idea behind converting ...
6
votes
1answer
153 views

Where can we ask open ended questions about research?

I have been reading the paper Efficient Global Optimization of Expensive Black-Box Functions by Jones, et al. and they describe maximizing the expectation of a metric they created, called the ...
5
votes
3answers
88 views

Fixing typos and minimum change length

Fixing typos usually results in changing a character or very few. When trying to fix such typos (on other people questions), I get a message that the change is too short. I bypassed that problem by ...
42
votes
8answers
789 views

Help spread the wealth

[This post was inspired by this one] You may have noticed that I award the occasional bounty - I like to give one when I see a particularly good answer or a question I think should get an answer. ...
7
votes
1answer
107 views

Can I split reputation gained from a featured question?

I got points answering the following question: How to check for the distribution stability? As commented bellow the answer, a different answer that included the main points was answered a day before. ...
8
votes
4answers
208 views

How to decrease the number of unanswered questions?

On SO, the percentage of unanswered questions is 27%. On cross validated, 39%. On cross validated, there is a lot of unanswered questions. I suggest it is due to the high technical level required to ...
12
votes
1answer
261 views

A book using some of our content?

This post about making books was posted to meta.SE very recently. Of particular interest to me, though, was Monica Cellio's answer -- Mi Yodeya have made four books already, including one that had a ...
22
votes
1answer
320 views

What does the logo for CrossValidated represent?

I'm talking about this puppy: It kinda looks like a heat-map or correlogram, but I would expect the other diagonal to be picked out in green, were that the case. (My expectations may be flawed. :) ...
7
votes
0answers
57 views

A question is unclear, but resolving the “unclarity” is part of the answer [duplicate]

Interpretation of the variance of a slope is unclear because the OP seems to be confused by notation, and therefore the notation in the question is confusing. StatStudent pointed this out in the ...
-1
votes
2answers
82 views

How about letting a between-domain question be shared in multiple sites?

A couple of days a go, I asked a question which was related to statistics, math, machine learning and computer science. First I posted it in here, then when I didn't get what I was looking for, I ...
14
votes
4answers
339 views

Are plain “Welcome to our site” comments too chatty?

My reading of the various pieces of stackexchange-network information about comments and chattiness would suggest that "Welcome to our site" comments on their own (absent any other text such as being ...
15
votes
4answers
346 views

To what extent should the deletion by the OP of answered questions be acceptable?

[Edit: looks like the question is now undeleted; the principle of what should be okay remains] Those of you without the privilege to see deleted questions won't get anything out of the link, but here ...
14
votes
6answers
281 views

Community Promotion Ads - 2016

It's 2016 now, and we've made some changes to the sidebar size. As such, we can now restart the Community Promotion Ads for 2016! Keep in mind, we have updated some of the guidelines compared to ...