Calculate Linear regression segment
Derivation of the formula for Ordinary Least Squares Linear Regression
Converting a string to a tuple in python Is it possible to unwrap materials made in Vertex Paint? I painted an group of objects in Blender using the Vertex Paint and was wondering if it would be possible to unwrap the mutliple materials(when the objects are joined together using Ctrl+J)? Do I have to paint it all over again? Continuity of $\sin(x)/x$ Is $\sin(x)/x$ continuous at $x=0$,(perfectly, not tends to)? The function has right hand and left hand limit same and equals 1 but what happens at perfect zero?it should be undefined. Is it? Why don't we pluralize "foot" in measurements? What was the galaxy formation Rust saw before confronting Erol Childress? What was the galaxy formation Rust saw before confronting Erol Childress in  S01E08?  It was weird like out of the series. I guess it was some sort of hallucination, a product of Rust's madness or addiction. How can native English speakers read an unknown word correctly? I have learned English for many years, and from the first day I began to learn it I know the dictionary is necessary for the study.  One of the important aspects is that English words, unlike German and Spanish, usually can not be read correctly without phonetics.  But recently, I talked with some native speakers and they told me they can read any word directly and rightly even though they never learned it before.  I just want to know how they can do that -- there is no ordinarily acceptable method to read an English word? How can I remap Caps lock to both Escape and Control? Wrong user when logging into Data Explorer I think I'm having the same issue as reported in this question:    When I log into SEDE with the same OpenID account I use for SE, a different user comes up ("James Wiseman" on Stack Exchange and "adsense" in Data Explorer).  Is there anything I can do personally to rectify this, or must I rely on the admins? What does "Meta" mean? I am fairly new to Stack Overflow and just stumbled across Meta Stack Overflow.  I can't seem to figure out what the purpose of the "Meta" site is. Can someone please explain it to me? Is there any way to actually impose disadvantage (not just cancel advantage) on saving throws against spells for a creature with Magic Resistance? Many creatures in D&amp;D 5e have a feature called Magic Resistance. One such is the :  Magic Resistance. The archmage has advantage on saving throws against spells and other magical effects.  So the Archmage has advantage on saving throws against magical effects. Suppose I wanted to weaken the Archmage's resistance to magic - I use some effect that gives disadvantage on the saving throw for my spell. Normally, this would balance out to a straight roll, as the  say:  If circumstances cause a roll to have both advantage and disadvantage, you are considered to have neither of them, and you roll one d20. This is true even if multiple circumstances impose disadvantage and only one grants advantage or vice versa. In such a situation, you have neither advantage nor disadvantage.  This seems to set a baseline for a straight roll on saves against magical effects, that the Archmage can never roll at disadvantage against magical effects. But is there a way to get around this? Keep in mind, such an ability must respect the  rule:  That said, many racial traits, class features, spells, magic items, monster abilities, and other game elements break the general rules in some way, creating an exception to how the rest of the game works. Remember this: If a specific rule contradicts a general rule, the specific rule wins.  The general rule here is that advantage and disadvantage balance out to a single die roll, so getting around Magic Resistance must either specifically override the rule for advantage and disadvantage, or eliminate Magic Resistance entirely. Is there any way (e.g. magic item, class feature, spell, etc.) to force a creature with Magic Resistance to make a save against a magical effect with disadvantage?  While writing this up I did find  which asks generally how to combat creatures with Magical Resistance, I intend this to be a (hopefully) more focused version of that question. Reference undefined in \section with amsbook I have a section that is devoted to the proof of a theorem, and hence I used  \section{Proof of Theorem~\ref{thm}}   Of course, because of the headers that are capitalized, it asks for \ref{THM} when producing the header, and I get an obvious error. What is the proper way to handle such a case? Below is a MWE:  \documentclass{amsbook} \usepackage{lipsum} \newtheorem{thm}{Theorem} \begin{document} \chapter{First Chapter} \section{The Theorem} \begin{thm}[Lipsum Theorem] \label{thm} \lipsum[1] \end{thm} \section{Proof of Theorem~\ref{thm}} \lipsum[1-23] \end{document}   When compiling I get:  LaTeX Warning: Reference `THM' on page 3 undefined on input line 14.   (each time it produces a header), and the header shows     `2. PROOF OF THEOREM ??' Why are vias placed this way on a PCB? I used to check complex commercial PCBs specially those of graphics cards to see how professional PCB designers do their layout and learn from their techniques.  When I checked the card shown below I noticed two things regarding the placement of vias:  (A higher resolution image is ).   The PCB is surrounded by stitching vias all around the edges. What's the role of all of these? I think they're connected to ground to act as a shield, if that's true, I can't understand technically how by this placement they achieve this shield? By looking closer to the mounting holes, I noticed they added vias all around the pad, why? Fast way to come up with solutions to $x(x-1)(x-2)(x-3)=1$? I can solve this equation $x(x-1)(x-2)(x-3)=1$ using the usual method but I am looking for a fast analytical method to solve this. Any hints ? Create a variable in .CSS file for use within that .CSS file Possible Duplicate:          We have some "theme colors" that are reused in our CSS sheet.  Is there a way to set a variable and then reuse it?  E.g.  .css OurColor: Blue  H1 {   color:OurColor; } How to handle dynamic changing ID's In XPath? How to Handle Dynamic Changing IDs In XPath? for example :   //div[@id='post-body-3647323225296998740']/div[1]/form[1]/input[1]   In this xpath id "3647323225296998740" is changing every time when reloading the page.   Is there any way to handle this type of situation in Selenium? This question has been answered before in many places but I just need some confirmation with my specific setup. I have Linux Mint installed and I just want a fresh Ubuntu 12.04 install to completely replace Mint. It's dual booted with Windows 7 and I want that to remain completely in tact.  Anyway, I'm currently running the Live CD installer. I've said I want to specify my own partitions and I'm at the following screen:     The list at the bottom expanded:     I confused by all the different partitions. Seems like I should just check the box beside sda5. But what about sda6? Do I just leave that alone?  Also just for confirmation, is the "right" way to replace Mint, or should I be deleting it first? Date & time format in Krusader - is it changeable at all? Using Ubuntu 16.04. I like Krusader, but can't figure out how it is possible to change date/time format for the Modified column. I truied to change system regional settings, but Krusader ignores them (while, e.g., Midnight Commander uses system settings). Switching application language (in Help menu) also does not affect the date/time format. I like the 24-hour format, not PM/AM, and I may prefer even to hide time, and leave only date. Is that possible in Krusader?  The other post is of no help, as there is no even such file in mys systems as ~/.kde/env/setlocale.sh Where is Jon going? Toggle wireframe mode with hotkey How do I toggle in and out of wireframe mode with my keyboard? Is there a hotkey for this?  I'm a beginner (obviously). I thought I could find this in the "view" menu, but it either doesn't exist or I have horrendous eyesight. Thanks! For example Lets use the Marrutact from Sandstorm, it can cast as a 5th level wizard. if it then takes a prestige class that requires the ability to cast 1st level Arcane spells and advances arcane casting such as Abjurant Champion. assuming it meets all other prerequisites does the Marrutacts spellcasting improve when it takes a level in Abjurant Champion or does it gain no benefit?