You are not logged in. Would you like to login or register?



12/23/2010 6:58 pm  #1


Stat Geek, Projections and Acronyms

I enjoy reading projections during the offseason but dont real get what they mean or how the number are predicted.  The one I was looking at was linked to off of VEB.

http://www.baseballthinkfactory.org/files/oracle/discussion/2011_zips_projections_-_st._louis_cardinals/

here is the 2010 predictions

http://www.baseballthinkfactory.org/files/oracle/discussion/2010_zips_projections_st_louis_cardinals/

 

12/23/2010 7:25 pm  #2


Re: Stat Geek, Projections and Acronyms

APRTW wrote:

I enjoy reading projections during the offseason but dont real get what they mean or how the number are predicted.  The one I was looking at was linked to off of VEB.

http://www.baseballthinkfactory.org/files/oracle/discussion/2011_zips_projections_-_st._louis_cardinals/

here is the 2010 predictions

http://www.baseballthinkfactory.org/files/oracle/discussion/2010_zips_projections_st_louis_cardinals/

One of the funny things about reading the 2010 predictions--questionable starting pitching, but a solid offense that should pull them through--was that reality was the opposite of the prediction.


Name                  Pred ERA    Actual ERA
Adam Wainwright      3.15         2.42
Chris Carpenter         3.47        3.22
Jaime Garcia*           4.75         2.7

 

12/23/2010 7:27 pm  #3


Re: Stat Geek, Projections and Acronyms

One of the things about a statistical prediction is that it comes with error bars, usually indicating something like the 95% confidence interval.  Those predictions don't indicate the error (i.e. range) but I am guessing it is something like this:

Name                  Pred ERA    95% confidence interval
Adam Wainwright      3.15         2.15 - 5.75

 

12/23/2010 7:43 pm  #4


Re: Stat Geek, Projections and Acronyms

95% confidence interval
        2.15 - 5.75

In that spirit, I have a 95% confidence level the Cardinals will win between 45-125 games. Wonder what kind of odds on that I'd get in Vegas?

 

12/23/2010 11:35 pm  #5


Re: Stat Geek, Projections and Acronyms

artie_fufkin wrote:

95% confidence interval
        2.15 - 5.75

In that spirit, I have a 95% confidence level the Cardinals will win between 45-125 games. Wonder what kind of odds on that I'd get in Vegas?

20 pays 21

 

Board footera

 

Powered by Boardhost. Create a Free Forum

Quotes = [quote][/quote] Bold = [b][/b] Underlined = [u][/u] Italic = [i][/i] Link = [url][/url] Code = [code][/code] Image = [img][/img] Video = [video][/video]