What are the assumptions of linear regression
Assumptions of linear regression
Anyone know a quick easy way to migrate a SQLite3 database to MySQL? How can I backup my programs/applications, so that after I reinstall a new one, I can still use the backup-ed ones? Is there a way, that I could backup all my programs, all apps, put them in a directory or something, so that I could install them quickly next time, without having to manually going over the app center, downloading them from terminal, etc?  Note that I might import them from a distro other than the one I exported them on. So, say I'm in Ubuntu, exported some stuff, and then installed BT and wanted to import them from there. Given Newton's third law, why are things capable of moving? Given Newton's third law, why is there motion at all? Should not all forces even themselves out, so nothing moves at all? When I push a table using my finger, the table applies the same force onto my finger like my finger does on the table just with an opposing direction, nothing happens except that I feel the opposing force. But why can I push a box on a table by applying force ($F=ma$) on one side, obviously outbalancing the force the box has on my finger and at the same time outbalancing the friction the box has on the table? I obviously have the greater mass and acceleration as for example the matchbox on the table and thusly I can move it, but shouldn't the third law prevent that from even happening? Shouldn't the matchbox just accommodate to said force and applying the same force to me in opposing direction? The passive with "let" Motion Tracking objects that go out of frame and re-enter later Show that if $(b,c)=1$, then $(a,bc)=(a,b)(a,c)$. Assessing approximate distribution of data based on a histogram Suppose I want to see whether my data is exponential based on a histogram (i.e. skewed to the right).   Depending on how I group or bin the data, I can get wildly different histograms.   One set of histograms will make is seem that the data is exponential. Another set will make it seem that data are not exponential. How do I make determining distributions from histograms well defined? Unzip a file with php Checking the way to stop duplicate names - validation rules or triggers How do we know for certain that space is expanding? Chapter number and chapter title in one line Access NSMutableArray from another class - Objective C Is it possible to have a pair of Gaussian random variables for which the joint distribution is not Gaussian? Somebody asked me this question in a job interview and I replied that their joint distribution is always Gaussian. I thought that I can always write a bivariate Gaussian with their means and variance and covariances. I am wondering if there can be a case for which the joint probability of two Gaussians is not Gaussian? I've switched from Drupal 7.14 to 7.15 three weeks ago and therefore, I'm encountering a series of very sophisticated (for me) memory limit errors.  Those errors occur any time I'm trying to clear cache in performance or to run update scripts.  My hosting company has increased my memory limit in php.ini up to 126 M, 256 M, 512 M, and even 1024 M. But the errors still occur. I've migrated my site from shared to VPS, But the error incredibly still occurs. I have no way and no idea how to move forward.   Here are the errors:   Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 30 bytes) in /home/example/public_html/sites/all/modules/views/views.module on line 416 Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 108 bytes) in /home/example/public_html/includes/menu.inc on line 2736 Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 71 bytes) in /home/example/public_html/sites/all/modules/chain_menu_access/chain_menu_access.module on line 59 allocate 64 bytes) in /home/example/public_html/sites/all/modules/views/includes/base.inc on line 93 How can I copy a file from another directory to the current one? I have this problem as part of a school assignment:  NOTE: In case it's hard to read in the image above, here's the directory tree: $ tree . `-- sample_dir1     `-- sample_dir         |-- admin         |-- cambridge         |   |-- cafeteria         |   |-- library         |   `-- security         |       |-- annex         |       |-- building         |       `-- parking         |-- faculty         |-- history.exe         |-- markham         |   |-- annex         |   |-- building1         |   `-- parking         |-- oxford         |   |-- outline.doc         |   |-- programming         |   |   `-- report.pdf         |   `-- security         `-- stenton             |-- gen_ed             `-- lib_arts                 |-- english.txt                 `-- match.doc  15 directories, 11 files  I tried doing the command: $ cp ../cambridge/security/parking ./parking2  ...but it isn't working. The question in the image above states that the current directory is stenton, and that we need to make a copy of the file named parking (from the security directory), and to name the new file parking2, and place it in the current directory, stenton, using relative pathnames. What am I doing wrong? My cp command seems to be correct. "A mice problem" vs. "a mouse problem" Find the highest order bit in C As title,  Is any finite-dimensional extension of a field, say $F$, algebraic and finitely generated?  Say if $K/F$ is a finite extension when $K$ is a finite-dimensional vector space of $F$. Clearly, this implies that $K$ is finitely generated (as an algebra) over $F$, since a basis is a generating set. So every finite extension is finitely generated.  So indeed they all are, is my logic correct? Which command controls the open file limits? I'm fairly new to blender and not a graphics person by any stretch of the imagination. I've been having some success though modelling semi-reflective glass for a project I wish to build (physically) and I'm wondering if it is possible to model the effects of a lens. The lens I wish to model is a double-convex type. It has a diameter of 120mm and a focal-length of 301mm. Is this something that can be modelled in blender and if so, how? I'd like to be able to position the camera close to this lens and reproduce the magnifying effects of the lens on the scene behind the lens as well as depth-of-field effects.  Thanks a lot.