tag:blogger.com,1999:blog-897456774486153841.post3330904659604551158..comments2024-03-28T06:07:36.391-07:00Comments on VIX and More: Ticker Sense on VIX SpikesBill Lubyhttp://www.blogger.com/profile/01241003017364820134noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-897456774486153841.post-59621514467135235172007-09-03T11:01:00.000-07:002007-09-03T11:01:00.000-07:00Hi Frank,Thanks for your kind words and comments a...Hi Frank,<BR/><BR/>Thanks for your kind words and comments about sample size. I agree that 30 is as good a heuristic as there is for doing a quick and dirty estimate of statistical significance.<BR/><BR/>When I first started this blog, I was pretty good about posting disclaimers about <A HREF="http://vixandmore.blogspot.com/search?q=sample+size" REL="nofollow">sample size</A>, <A HREF="http://vixandmore.blogspot.com/search?q=statistically+significant" REL="nofollow">what was statistically significant</A>, <A HREF="http://vixandmore.blogspot.com/search?q=statistical+significance" REL="nofollow">etc</A>...but clearly I have gotten a little lax in this area. <BR/><BR/>For now, let's just say that where n < 30, readers should consider the entertainment/voyeuristic value to be greater than any informational value or statistical rigor.<BR/><BR/>Thanks for reading!Bill Lubyhttps://www.blogger.com/profile/01241003017364820134noreply@blogger.comtag:blogger.com,1999:blog-897456774486153841.post-83326285227554513142007-09-01T11:02:00.000-07:002007-09-01T11:02:00.000-07:00I just discovered your site and it looks really in...I just discovered your site and it looks really intriguing and thus I'm sorry to make my first comment a critical one. Your reference to Birinyi & Assoc analysis does not point out the fact that there are only 5 data points. Nothing can be concluded with so tiny a sample.<BR/><BR/>I find that research outfit along with Bespoke and others to repeat this mistake over and over with analysis such as "out of the last X times this happened the market increased Y times" where X is a number smaller than 30.<BR/><BR/>I'll be an avid reader of this blog. Thanks.FrankNYChttps://www.blogger.com/profile/09835489382866504504noreply@blogger.com