Comments on: Statistics 101 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/ Web Analytics Blog - Paving the way to understanding web data as it relates to statistics and other methodologies. Thu, 20 Nov 2008 20:46:32 +0000 http://wordpress.org/?v=2.1.3 By: judah http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-2 judah Mon, 21 May 2007 02:56:29 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-2 Welcome to the blogosphere! As a fellow stats geek, I am very much looking forward to reading your future posts. In fact, I'm excited to see what you'll choose to discuss! Best, Judah Welcome to the blogosphere! As a fellow stats geek, I am very much looking forward to reading your future posts. In fact, I’m excited to see what you’ll choose to discuss!

Best,
Judah

]]> By: Jacques Warren http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-3 Jacques Warren Wed, 23 May 2007 11:17:18 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-3 Hi Wendi, welcom aboard. There is a need of deep statistical discussions in the web analytics blogosphere. I look forward to your posts. Please, contact me, I would like to discuss a little technical matter. Hi Wendi,

welcom aboard. There is a need of deep statistical discussions in the web analytics blogosphere. I look forward to your posts.

Please, contact me, I would like to discuss a little technical matter.

]]> By: Sébastien Brodeur http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-4 Sébastien Brodeur Wed, 23 May 2007 14:45:05 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-4 Why the median is needed? What does it tell me? Why the median is needed? What does it tell me?

]]> By: Wendi http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-5 Wendi Wed, 23 May 2007 15:57:33 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-5 Hi Sebastien, The median is a good measure of the center of your data. Many people believe that the mean (average) is the center but if your data is left or right skewed this will give a false sense of centrality. It is a good practice to compare median vs. mean to see where the mean is in relation. ex. If you know that half of your visitors (median point) are staying on your site 1.5 mins or less but your average is 5 mins this may cause additional inspection into your data to understand why there is such a huge shift between these two metrics. It could be that there were one or two visitors that stayed on your site for a large amount of time for some reason.... a reason you might want to know. Thanks for the question and let me know if I didn't answer it to what you expected. Regards, Wendi Hi Sebastien, The median is a good measure of the center of your data. Many people believe that the mean (average) is the center but if your data is left or right skewed this will give a false sense of centrality. It is a good practice to compare median vs. mean to see where the mean is in relation.
ex. If you know that half of your visitors (median point) are staying on your site 1.5 mins or less but your average is 5 mins this may cause additional inspection into your data to understand why there is such a huge shift between these two metrics. It could be that there were one or two visitors that stayed on your site for a large amount of time for some reason…. a reason you might want to know.
Thanks for the question and let me know if I didn’t answer it to what you expected.
Regards, Wendi

]]> By: Wendi http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-6 Wendi Wed, 23 May 2007 20:03:05 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-6 Hi Jacques, We obviously both have great taste in picking templates. :-) Thanks for contacting me. Wendi Hi Jacques, We obviously both have great taste in picking templates. :-)

Thanks for contacting me.

Wendi

]]> By: Jacques Warren http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-7 Jacques Warren Wed, 23 May 2007 20:34:57 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-7 Well, now I want your new one ! :-) I am going to LOVE reading your blog. As an avid reader, I would really appreciate if you could recommend 3 or 4 good books on stats. Maybe on your next post? I did some courses at university, but since I graduated in sociology back in 1985, I'm kinda rusty with all that stuff. Well, now I want your new one ! :-)

I am going to LOVE reading your blog. As an avid reader, I would really appreciate if you could recommend 3 or 4 good books on stats. Maybe on your next post? I did some courses at university, but since I graduated in sociology back in 1985, I’m kinda rusty with all that stuff.

]]> By: Sébastien Brodeur http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-9 Sébastien Brodeur Tue, 29 May 2007 18:09:39 +0000 http://coremarkanalytics.com/blog/2007/05/20/statistics-101/#comment-9 Thank Wendi, this is helping me to demystify the two. I will second Jacques (hello Jacques by the way) and ask the same thing, any good book you can suggest? Thank Wendi, this is helping me to demystify the two.

I will second Jacques (hello Jacques by the way) and ask the same thing, any good book you can suggest?

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