help with running a regression on nfl stats
Posted: Fri Apr 08, 2011 7:11 am
Hey guys, just wondering if I could get some help with the best way to use my data.
After the challenge system was introduced into the nfl in 1999 the % of home wins went from 58.54% (from 1970-1998) down to 57.52% (from 1999-2009). I have data for all the games. I've got the variable ptsdif with home team score minus the away team score therefore a + = win and a - = a loss.
I firstly created a dummy variable for post99 which i made 1 and 0 would be for pre99 games. I ran the regression with ptsdiff as the dependent and post99 as the independent and got a p-value of 0.3379 for my dummy variable which i guess doesn't help me much.
I was just wondering if there is some other way I can use the data. I just want to be able to say there was or was not a significant change in home wins after 1999 which can possibly be explained by the coach challange rule.
Thank you.
After the challenge system was introduced into the nfl in 1999 the % of home wins went from 58.54% (from 1970-1998) down to 57.52% (from 1999-2009). I have data for all the games. I've got the variable ptsdif with home team score minus the away team score therefore a + = win and a - = a loss.
I firstly created a dummy variable for post99 which i made 1 and 0 would be for pre99 games. I ran the regression with ptsdiff as the dependent and post99 as the independent and got a p-value of 0.3379 for my dummy variable which i guess doesn't help me much.
I was just wondering if there is some other way I can use the data. I just want to be able to say there was or was not a significant change in home wins after 1999 which can possibly be explained by the coach challange rule.
Thank you.