http://www.revisemri.com/blog/2006/confidence-intervals/ For your short relaxation times. Mon, 16 Aug 2010 10:54:40 +0000 hourly 1 http://wordpress.org/?v=3.0.1 http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-64789 Dave Higgins Thu, 05 Aug 2010 14:10:34 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-64789 "t is found in look-up tables (reach for your closest stats book)": the shape of the t distribution depends on the number of degrees of freedom. So, in this problem, t is not calculated, it's looked up. I suppose you could calculate it from the equation for t-distribution (e.g. see <a href="http://mathworld.wolfram.com/Studentst-Distribution.html" rel="nofollow">Mathworld</a> or <a href="http://en.wikipedia.org/wiki/Student's_t-distribution" rel="nofollow">Wikipedia</a>). “t is found in look-up tables (reach for your closest stats book)”: the shape of the t distribution depends on the number of degrees of freedom. So, in this problem, t is not calculated, it’s looked up. I suppose you could calculate it from the equation for t-distribution (e.g. see Mathworld or Wikipedia).

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-64787 Brian Thu, 05 Aug 2010 13:10:27 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-64787 How do we calculate 't'? this is the only problem part for me How do we calculate ‘t’? this is the only problem part for me

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-39532 Ciaran Fri, 27 Feb 2009 09:55:51 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-39532 Many thanks for a very clear and useful explanation. Many thanks for a very clear and useful explanation.

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-38499 Joan Wed, 10 Dec 2008 08:17:43 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-38499 Thank you for a clear and simple explanation Thank you for a clear and simple explanation

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-38416 michael Thu, 04 Dec 2008 15:18:09 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-38416 how do we calculate t how do we calculate t

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-34199 Dave Higgins Sun, 04 May 2008 23:55:22 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-34199 <p>Well spotted Ibrahim! Thanks - I've fixed the typo in line 7 of the Example text.</p> Well spotted Ibrahim! Thanks – I’ve fixed the typo in line 7 of the Example text.

]]> http://www.revisemri.com/blog/2006/confidence-intervals/comment-page-1/#comment-34177 ibrahim Sun, 04 May 2008 16:34:12 +0000 http://www.revisemri.com/blog/2006/confidence-intervals/#comment-34177 is the SD 6 or 9? is the SD 6 or 9?

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