yuri_base 1 #1 June 21, 2006 Yo! This is a simple poll to estimate the ratio of total number of jumpers to jumpers with BASE #'s. When there's statistically significant number of responses, the total number of jumpers can be estimated as: [Total number of BASE jumpers in the world] ~ [highest BASE number to date] * (100/[percentage of jumpers with BASE numbers]) This idea was stimulated by an attempt to estimate the Life/Death ratio. Thanks! YuriAndroid+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio Share this post Link to post Share on other sites
yuri_base 1 #2 June 21, 2006 What happened to the poll? Is it a bug in the forum software? Anyway, the last time I looked there were about 50 votes and they split 70% yes/30% no. Which puts the ratio of total number of BASE jumpers to those with BASE #'s at 1.4. So, the total number of BASE jumpers in the world can be estimated as 1070*1.4 = 1500 as of June 2006. (100 of them are dead.) L/D = 15 YuriAndroid+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio Share this post Link to post Share on other sites
TomAiello 26 #3 June 21, 2006 QuoteWhat happened to the poll? Is it a bug in the forum software? It appears to still be functional. What are you seeing?-- Tom Aiello Tom@SnakeRiverBASE.com SnakeRiverBASE.com Share this post Link to post Share on other sites
dr.pepper 0 #4 June 21, 2006 Quote So, the total number of BASE jumpers in the world can be estimated as 1070*1.4 = 1500 as of June 2006. (100 of them are dead.) Not even close. At a guess i'd say less than 10% of jumpers worldwide even look at this site and probably only 1% of those would vote in your poll. dr. pepper Share this post Link to post Share on other sites
TomAiello 26 #5 June 21, 2006 QuoteNot even close. At a guess i'd say less than 10% of jumpers worldwide even look at this site and probably only 1% of those would vote in your poll. Can you explain how that relates to Yuri's attempt to extrapolate a percentage of BASE number holders v. non number holders? A reasonable counterargument would be "the people who read this web site are a skewed sample", but not simply "only a very small percentage read this web site." It's not terribly relevant what percentage respond to the poll--only whether or not they are representative of the average on the issue of having or not having a number.-- Tom Aiello Tom@SnakeRiverBASE.com SnakeRiverBASE.com Share this post Link to post Share on other sites
madflicker 0 #6 June 21, 2006 You also need to assume that base jumpers with and without base numbers are equally likely to reply to this forum. Those without may be less likely since they did not report to get a base number in the first place.In addition there are a fair number of base jumpers that have a significant number of jumps but lack one or more objects. Share this post Link to post Share on other sites
