Re: [PHP] Variance Function

2007-01-13 Thread tedd
At 4:19 AM + 1/12/07, Andrew Brampton wrote: - Original Message - From: "Richard Lynch" <[EMAIL PROTECTED]> To: Sent: Thursday, January 11, 2007 11:29 PM Subject: [PHP] Variance Function Any advice? Anybody got a good "variance" function to do what I'm trying to do? Hey, I've s

Re: [PHP] Variance Function

2007-01-12 Thread David Giragosian
Richard, I think you are looking for data about both the variance and the standard deviation of the array of dates. This would yield, for example, a bell-shaped curve, like one gets when administering an intelligence test to a sample population. Two thirds of the dates fall within +/- 1 standard

Re: [PHP] Variance Function

2007-01-11 Thread Andrew Brampton
- Original Message - From: "Richard Lynch" <[EMAIL PROTECTED]> To: Sent: Thursday, January 11, 2007 11:29 PM Subject: [PHP] Variance Function Any advice? Anybody got a good "variance" function to do what I'm trying to do? Hey, I've seen you solve many questions on this list, and I

Re: [PHP] Variance Function

2007-01-11 Thread Jochem Maas
hi Richard, your email was hard to follow, and I don't have real answers for you but maybe my simpleton's view of the situation might offer you new avenues of thought to consider. Richard Lynch wrote: > It's been 20+ years since I took a stats class... 20 years ago I was mostly riding a push bik