tag:blogger.com,1999:blog-23053767.post7465890297205361550..comments2024-01-30T12:46:10.810-05:00Comments on Yappa Ding Ding: In praise of speed bumpsYappahttp://www.blogger.com/profile/18126433451905766475noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-23053767.post-65798636253334381872013-11-08T11:45:41.515-05:002013-11-08T11:45:41.515-05:00To Anonymous at 10:54.
Hi and thanks for your co...To Anonymous at 10:54.<br /><br />Hi and thanks for your comment. I'm not arguing against roundaboauts; I'm arguing for using speedbumps on dangerous roundabouts.Yappahttps://www.blogger.com/profile/18126433451905766475noreply@blogger.comtag:blogger.com,1999:blog-23053767.post-17103727798487099952013-11-08T10:54:22.725-05:002013-11-08T10:54:22.725-05:00Your whole argument that there is a problem with r...Your whole argument that there is a problem with roundabouts in general is based on almost completely useless stats. <br /><br />First, you are only looking at data for only one roundabout. Therefore, you can't generalize past that one roundabout. <br /><br />Second, you are only looking at the data for two time intervals, one before and one after. What if the 509 days before the roundabout had a particularly low number of accidents? That hypothesis may not be true, but the data you give would fit that hypothesis just as well and your hypothesis that there is an increase in accidents as a result of the roundabout. Therefore, you can't even make a general statement that accidents have increased at that one roundabout.<br /><br />Furthermore, you haven't provided any evidence that there has not been an increase in accidents at other intersections where roundabouts have not been installed (maybe for some reason unrelated to roundabouts there has been an increase in accidents). I'd say you are committing the classic correlation = causation error here, but you haven't even provided enough data to remotely show a correlation. Anonymousnoreply@blogger.com