# All Questions

1,439 questions
28 views

### PSPP has no dedicated tag

A meta question: how come https://en.wikipedia.org/wiki/PSPP has no tag of its own? Its users are more command line driven than SPSS users which are more GUI driven....
36 views

### What does the red circle at the review queue pictogram mean?

I've recently gained acesses to some review queues, but most of the times there's something to be reviewed (gray dot beside the queue), there's no notification saying so, other times I see a red dot ...
218 views

### Is a sole answer with a down vote worse than no answer at all?

I was the only responder to a question recently. The question betrayed some misunderstandings on the part of the asker, and while my response was accurate, respectful and responsive, it also asked and ...
68 views

### What is a good question and what is a clear one, how can I get the moderators to reason specifically and thoroughly their decisions concerning myself? [closed]

I have a question about my Cross Validated post: In a truncated normal distribution truncated at points a and b how can the mode(μ) coincide with the mid-range((a + b)/2)? Semper necessitas probandi ...
90 views

### Questions on reinforcement learning topics would be better suited for AI Stack Exchange

I've notice that there are several unanswered questions on RL topics on this website. More specifically, about 1/3 (221/617) of the questions on RL on this website have not received an answer. This ...
58 views

### Can we fix up the “Should we trust statistics?” question

I was just writing up an answer to this question when it was decided that it should be closed. I understand why it is closed; the title alone makes it seem both a bit inflammatory and opinion based, ...
24 views

### How do you notify that you edited your question if was put _on hold_? [duplicate]

I asked a question and it turns out now is [on hold] because 'it's unclear what I asked' I edited hoping the unclear step was that but I am not sure if it was that. How do you notify the people who ...
180 views

### Canonical duplicate for “Why do predictions vary less than observations?”

Two recent questions: Regression - variance of predictions much lower than variance of target, which I voted to close as a duplicate of Regression predictions show far less variance than expected I ...
88 views

### Is there a “requests for reopen” queue here on meta?

Is there a "requests for reopen" queue here on meta? I can't find it view a Google search restricted to stats.meta.stackexchange.com nor via a search within meta.
132 views

### Extract software-specific default close reason

Almost four years ago there was a discussion on Meta that lead to formulating the "not about statistics" default close reason description as following: This question appears to be off-topic because ...
66 views

### Why do we close programming questions instead of migrating them to SO?

I have the (possibility wrong) impression that most programming questions are closed with the motivation "this is not about stats, but about programming, or etc.", rather than being migrated to SO. ...
42 views

I noticed that this question https://ai.stackexchange.com/questions/10196/why-does-is-make-sense-to-normalize-rewards-per-episode-in-reinforcement-learnin was migrated to AI.SE. I think that it is ...
76 views

### Community Promotion Ads — 2019

2019 is here! And with the new year, as usual, comes a new iteration of Community Promotion Ads! Let’s refresh these for the coming year :) What are Community Promotion Ads? Community Promotion Ads ...
174 views

### Best Practices for Searching CV

Over the course of almost nine years, we have amassed a body of good answers to many clearly stated questions: one of our site's principal goals. To be useful, though, these answers have to be ...
116 views

### artificial-intelligence tag

We have 178 questions tagged as artificial-intelligence. As you can guess, those questions do not seem to differ anyhow to the questions tagged as machine-learning. Should we map artificial-...
156 views

I’m posting this thread reopening request here in keeping with the procedures outlined in the Meta post "How do you reopen a closed question?" I only learned fairly recently that my question “What are ...
48 views

165 views

### 2018: a year in moderation

It's New Year's Day in Stack Exchange land... A distinguishing characteristic of these sites is how they are moderated: We designed the Stack Exchange network engine to be mostly self-regulating, ...
211 views

### Do we have an authoritative answer on why validation accuracy can oscillate or even increase, when validation loss keeps increasing?

I know that accuracy is an improper scoring rule, thus it shouldn't be used to choose among classifiers. In particular, it should not be used to choose the best hyperparameters for a NN. However, ...
277 views

### Do you flag absolute nonsense questions?

Here: https://stats.stackexchange.com/questions/381309/cobbler-needed-right-now Is a "question" from a bot or a troll. Do we ever bypass "vote to close" and use the flag function if a Q is complete ...
206 views

### Why was my question deleted if It was not even on hold nor closed?

This was my question https://stats.stackexchange.com/questions/374062/least-square-estimators-for-beta-0-and-beta-1-and-uncorrelated-relation-b I am surprised that was deleted because there is ...
150 views

I've noticed that stock trading is a prominent theme among reinforcement-learning and neural-networks and deep-learning questions. I think this is because (1) stock trading is an easy problem to ...
290 views

### Overlap with ai.stackexchange and datascience.stackexchange

I found that quite a few tags are present at each of these sites in the SE universe: Artificial Intelligence (AI) Data Science (DS) Cross Validated (CV) For example: reinforcement-learning (AI, DS, ...
62 views

### What is our stance on website recommendation questions?

What is our stance on website recommendation questions? Are they on-topic or off-topic? Assume that the website recommendation pertains to statistics / machine learning. Example: Is there any ...
44 views

### The tag [calibration]

From its excerpt: Calibration can refer to predicting an explanatory variable from an observation of the dependent variable; to adjustment of measurements to agree with value of some standard; to ...
43 views

### Filter for questions for review

I received the requests for reviewing the questions. Among them there are questions related to machine learning which I have not any knowledge. Is there any way (for example, modify my profile) such ...
154 views

### How to deal with paralysed questions where the Original Poster is inactive?

Example case The following question "Unable to resolve the following parameters:" jags error for Latent Class Model is a question that is more than two years old now. It has just been ...
83 views

### Modifying the title of duplicate questions

This question was recently closed as duplicate. I agree with this, but the title is now the title of the older question which is more restrictive than that of the new one (the old one is about two ...
143 views

### What to do with a question which is a duplicate of a question on Math SE

This question What is a distribution over functions? is a duplicate of https://math.stackexchange.com/questions/2297424/extending-a-distribution-over-samples-to-a-distribution-over-functions but I ...
134 views

### How can I figure out why my reviewer privileges were revoked and how can I get them back?

This question concerns me personally, but some parts of it might also be of general interest. During the last week or so, I had been regularly reviewing first posts and late answers. Yesterday @gung ...
77 views

### Any evidence-based arguments in favor of the “comments are not for extended discussion” policy?

The SE universe has a "comments are not for extended discussion" policy, with the effect that if such an extended discussion occurs, moderators intervene and "move the discussion to chat". I am a ...
73 views

### I can't find the place to ask my question

I have a question about my Cross Validated post: I have a question I want to ask but I can't find the appropriate place to ask it Is this a statistics question or something else? What tags should ...
49 views

### Improve closure-to-migrate voting

We often get questions that focus on how to do something using R (or Python, rarely SAS, MS Excel or others), with little to no statistical content. Such questions are off-topic and should be closed. ...
59 views

### Which image file formats can be embedded in posts on Cross Validated?

The question is in the title: which different image/animation file formats can be embedded here? I have searched around without finding any list of formats.
112 views

### (How) can I make an on-topic question from this?

I posted this question on Software Recommendations. As it is getting no response, I think that I might try to make a meaningful chart for my friend, in Excel . Actually, I would prefer someone else ...
107 views

### Do we really want a tag for Javascript?

We have a tag javascript (16 questions, 4 are closed). It was created in 2011. I saw it prop up again in the active questions feed earlier today. No question is tagged only with javascript, and it ...
182 views

### What should we do with HW questions where the person says “I have no idea how to start”?

Our guidelines for homework question say to use the self-study tag and tell what you've tried. But what about when a person says, "I have no idea where to start?" Should such questions be closed? ...
126 views

### Is it allowed to ask questions again if they did not get an answer last time

I asked this question at least 3 months ago: "Is there an intuitive understanding of the Halmos-Savage Theorem?" It's received two upvotes, but few views, and no answers or comments.
187 views

### I get surges of upvotes, and they are lumpy in time. Is this because the site is surfacing my questions all at once, or do I have a stalker/superfan?

Question is in the title. This morning I wake up to 40 more points, on various questions that I had asked since I started using this site years ago. Yesterday I had something similar. Is the site's ...
134 views

### Should I ask this mathematical statistics question here or on math.se?

I would like to ask the following question: if $M$ is a $m\times n$ constant matrix and $\eta\sim\mathcal{N}(0,I)$, then does \mathbf{E}_{\eta\sim\mathcal{N}}\left[\frac{\lVert M\eta\rVert}{\...
109 views

Again posts can linger for too long (days) in the review queues without resolution. Now not because the queues are long, they are short so people forgot to visit them. See my former question long ...
101 views

### What to do with a question which asks about R packages and how to fit RBF networks

This question How to fit a RBF network in R? asks an off-topic question (which R package to use to fit RBF networks) and a question which, while on-topic, is very likely a duplicate. Should I close ...
148 views

### Where is our canonical answer to questions about normality of residuals and inference?

We get questions about the normality of residuals from models, e.g., Dependent variable - bimodal? Often, as in this example, it turns out that the OP wants to perform inference on model parameters ...
603 views

### Cross Validated's updated site theme is ready for testing!

As part of implementing the new unified themes across the network, we're gradually rolling out updated site themes for each site. As of today, we have enabled your updated site theme for testing. If ...
172 views

### What to do when an on-topic question has already been posted on another SE site?

The question, Properties of MLE (minimal sufficient and complete) on a restricted parameter space was, per the comment, already posted on the math site. Moreover, people have been voting to close it (...
337 views

### Can we somehow fast-track the achievements that are necessary to get particular people more administrative rights?

A gold tag badge requires 1000 votes in at least 200 posts. Could we not fast-track the rights that relate to such badges? The current rate at which people (especially non-moderators) acquire these ...
253 views

### Mentioning commercial/freemium product that I developed in my answers

I am an expert on the topic and answered a set of questions. I am wondering if it is OK to mention the solver that I develop given that it is commercial but has freemium plans. All my answers are ...
147 views

### Should we have a canonical question about coincidences?

Right now, this question is marked for closing as a duplicate of this one. Yet the titles and subjects are totally different at first glance - and someone searching for something similar will have ...