1) How early in a season can you use it? Is it like RPI in that you need at least 8 games to make it relevant or is it based on having scored XX points?

2) Again like RPI, does it become more accurate later in the season?

3) Can you use previous season data to predict future season effectiveness?

4) How does IQ impact the ts%? Should a coach expect the ts% to increase as IQ improves?

5) After calculating ts%, should a coach still adjust distribution based on opponent matchups, type of defense, etc?

The numbers don't really start carrying weight though until you have a sufficiently high number of attempts for that player across 2pt, 3pt, and FT. That point can happen at different times of the season depending on the player's usage, the teams tempo, etc. Generally, I don't put much value in the numbers until the player has 100+ points. I also balance it against what I would expect a player of that caliber to produce based upon his ratings. The numbers get more accurate as the season goes on and the sample size gets bigger. There is a argument to be made, however, that even at the end of the season, the sample size is too small and the variation in opposing talent from game to game too large to ever have an accurate number, but I tend to think they provide decent value. On my best teams, I tend to schedule in the top 20 SoS and try to play pretty consistent levels of talent so the numbers have more value because the quality of defender is pretty consistent game to game.

Although I understand the point about FTs, it seems the more my players drive, the more offensive fouls they commit which offsets some of the benefits of drawing fouls on the opposing team.

For a look at a number of advanced metrics, see:

http://www.basketball-reference.com/blog/?p=1120

Its basically that, plus the fact that there is lost potential in a lot of FT if it is a 1 and 1. Miss the first one, then you lost the chance to score another point so 1 FTA is not equal to 0.5 a 2pt attempt because if you don't make the first FT of a 1-1, the box score will show 0-1 on FT but really, you should think of it as 0-2 because when you first went to the line, you had the potential to score 2 points but only ended up with 1 attemptPosted by tianyi7886 on 1/31/2013 12:25:00 AM (view original):

I don't know why .44 is there but I have a feeling it is a fitted number based on the # of +1's (fg made and foul) and fts from technical fouls, divided by all free throws. If there are no +1s or technical fouls, then 2 ft = 1 offensive shot, which means the multiplier for ft would be .5

On your last point, while that's true, doesn't it figure into the turnover numbers? So that's still only two things you really need to look for to judge offensive efficiency (TS%, turnovers)Posted by dukenilnil on 1/31/2013 9:29:00 AM (view original):

I use both TS% and EFG%. When I update the numbers every few games depending on my free time.

The numbers don't really start carrying weight though until you have a sufficiently high number of attempts for that player across 2pt, 3pt, and FT. That point can happen at different times of the season depending on the player's usage, the teams tempo, etc. Generally, I don't put much value in the numbers until the player has 100+ points. I also balance it against what I would expect a player of that caliber to produce based upon his ratings. The numbers get more accurate as the season goes on and the sample size gets bigger. There is a argument to be made, however, that even at the end of the season, the sample size is too small and the variation in opposing talent from game to game too large to ever have an accurate number, but I tend to think they provide decent value. On my best teams, I tend to schedule in the top 20 SoS and try to play pretty consistent levels of talent so the numbers have more value because the quality of defender is pretty consistent game to game.

Although I understand the point about FTs, it seems the more my players drive, the more offensive fouls they commit which offsets some of the benefits of drawing fouls on the opposing team.

I have a couple of questions regarding the ts%.

1) How early in a season can you use it? Is it like RPI in that you need at least 8 games to make it relevant or is it based on having scored XX points?

2) Again like RPI, does it become more accurate later in the season?

3) Can you use previous season data to predict future season effectiveness?

4) How does IQ impact the ts%? Should a coach expect the ts% to increase as IQ improves?

5) After calculating ts%, should a coach still adjust distribution based on opponent matchups, type of defense, etc?

Happy that the interview could spark a good discussion like this.