The direct blog-free link is:<p><a href="http://matthias.vallentin.net/probability-and-statistics-cookbook/" rel="nofollow">http://matthias.vallentin.net/probability-and-statistics-coo...</a><p>which was discussed in depth previously:<p><a href="http://news.ycombinator.com/item?id=4527914" rel="nofollow">http://news.ycombinator.com/item?id=4527914</a>