Comments on: Advertising Firefox on Wednesdays http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/ Tue, 10 Jan 2012 04:12:06 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Ivan Ičin http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-54053 Ivan Ičin Thu, 18 Sep 2008 22:44:50 +0000 http://blog.mozilla.com/metrics/?p=112#comment-54053 Thanks Ken, I was searching round for exact model name (as it is not plain regression) so I guess it should be this: http://en.wikipedia.org/wiki/Multinomial_logit Thanks Ken,

I was searching round for exact model name (as it is not plain regression) so I guess it should be this: http://en.wikipedia.org/wiki/Multinomial_logit

]]> By: kkovash http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-53988 kkovash Thu, 18 Sep 2008 16:55:28 +0000 http://blog.mozilla.com/metrics/?p=112#comment-53988 Ivan -- thanks for asking. There are many statistical programs that allow you to run a regression this way, e.g., SAS, SPSS, R, Stata, etc. Something as basic as Excel might even do the trick. The challenging part can simply be knowing the right command. For example, using Stata, I can run the regression above by simply entering the command "regress costperclick i.hourofday". costperclick is my left-hand side (dependent)variable and hourofday is a dummy on the right hand side (independent variable). I think I've seen other programs where you would have to, in the example above, manually code each of the 24 hours of the day as a unique dummy, but once you've learned how your program handles this, you should be able to treat this as a plain regression. Ken Ivan — thanks for asking. There are many statistical programs that allow you to run a regression this way, e.g., SAS, SPSS, R, Stata, etc. Something as basic as Excel might even do the trick.

The challenging part can simply be knowing the right command. For example, using Stata, I can run the regression above by simply entering the command “regress costperclick i.hourofday”. costperclick is my left-hand side (dependent)variable and hourofday is a dummy on the right hand side (independent variable).

I think I’ve seen other programs where you would have to, in the example above, manually code each of the 24 hours of the day as a unique dummy, but once you’ve learned how your program handles this, you should be able to treat this as a plain regression.
Ken

]]> By: Ivan Ičin http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-53899 Ivan Ičin Thu, 18 Sep 2008 06:24:03 +0000 http://blog.mozilla.com/metrics/?p=112#comment-53899 Hi, I would have use of applying this model on some data, but I haven't learned exactly this model on my university course of statistics (only plain regression). So I was wondering if you could give me some info like some link, or the name of the test, or program that can output this results, or anything. Thanks very much. Ivan Hi,

I would have use of applying this model on some data, but I haven’t learned exactly this model on my university course of statistics (only plain regression).

So I was wondering if you could give me some info like some link, or the name of the test, or program that can output this results, or anything.

Thanks very much.
Ivan

]]> By: Ivan Ičin http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-51900 Ivan Ičin Fri, 05 Sep 2008 17:05:00 +0000 http://blog.mozilla.com/metrics/?p=112#comment-51900 It seemed like that from equation, I guess it is more clear in the table below, which I just scanned. It seemed like that from equation, I guess it is more clear in the table below, which I just scanned.

]]> By: kkovash http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-51731 kkovash Thu, 04 Sep 2008 22:38:47 +0000 http://blog.mozilla.com/metrics/?p=112#comment-51731 Ivan -- the hour variable is a dummy variable, i.e., the equation sees it as a string and not numeric character. I probably could have explained that better. Ken Ivan — the hour variable is a dummy variable, i.e., the equation sees it as a string and not numeric character. I probably could have explained that better. Ken

]]> By: Ivan Ičin http://blog.mozilla.com/metrics/2008/09/04/advertising-firefox-on-wednesdays/comment-page-1/#comment-51710 Ivan Ičin Thu, 04 Sep 2008 21:57:11 +0000 http://blog.mozilla.com/metrics/?p=112#comment-51710 Why the hell cost per click would scale linear with hour digit? This is case for ANOVA, not regression Why the hell cost per click would scale linear with hour digit?

This is case for ANOVA, not regression

]]>