Stats for Dummies, No question too dumb.

Post any question you have on stats and we'll attempt to combine to answer it.

OPS+.... correct me if I'm wrong... but OPS is spread out across all qualifying MLB players and averaged into one "average OPS player"... the + is on how many points above that average player is, no?
Say average OPS is found to be .750 for 2007. Manny Ramirez say ends up at 1.000 OPS. Is Mr. Ramirez' OPS+ .250?
And if it is... it's a really dumb stat. Actually OPS is pretty stupid too. They're doing me a favor by some basic arithmetic.

Not quite... OPS+ is a player's own OPS divided by his league's average OPS, and then adjusted for his home ballpark.

Then, a couple decimal changes to make the whole number (say, 1.00) into 100 (for a totally-average player's OPS+).

So:

If your OPS is .600 and the league average is .800, divide .600 by .800 to get .750; use the assigned ballpark rating for your park against the .750, get a result of, say, .767, and change the decimal; your OPS+ is 76.7, or 77.

What's great about OPS+ is it can be used to measure against eras, all-time, or anything else in MLB history you want to select, because of the adjustments possible.

Ok it says no question too dumb.

OBP -which I know is On Base Percentage that is the number of times the player is on base. Which includes walks ?

Slugging Percentage- where does that percentage come from ? I have tried and tried to figure that out, but it makes no sense to me

OBP includes walks, SLG does not. SLG (slugging percentage) is a measure of power.

OBP = (H + BB + HBP) / (AB + BB + HBP)

SLG = (1B + (2 x 2B) + (3 x 3B) + (4 x HR)) / AB

So, if a batter had 5 AB, and got a single, double , HR and a 2 strike outs, would it be
1 for single
2 for the double
4 for the HR

or

1 for single
3 for the double
5 for the HR
?

You're thinking of OPS, which is the sum of OBP and SLG. I'm going to change your example slightly, and say one of those K's is a walk instead, because it's important.

OBP includes walks, SLG does not. SLG (slugging percentage) is a measure of power.

OBP = (H + BB + HBP) / (AB + BB + HBP)

SLG = (1B + (2 x 2B) + (3 x 3B) + (4 x HR)) / AB

An easy way to remember SLG is that it's just total bases divided by at-bats.

1 base for a "Single" and so on. Homerun is four bases.

What is XBH?

Extra Base Hits:

XBH = (2B + 3B + HR)
XBH% = (2B + 3B + HR)/hits