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Post by chi5hi on Jun 13, 2022 15:06:21 GMT -6
Some years ago I got ahold of a formula for computing QB rating. Thumbing through some old notebooks I found it.
Here it is. Does anyone concur? Not?
1). Divide completions by attempts.
2). Subtract 0.3.
3). Divide that by 0.2 and record the total.*
....* the total cannot be greater than 2.375 or less than 0.
4). Divide passing yards by pass attempts.
5). Subtract 3.
6). Divide by 4 and record the total.
7). Divide the number of TD passes by pass attempts.
8). Divide that by 0.05 and record the total.
9). Divide the number of interceptions by pass attempts.
10). Subtract that number from 0.095.
11). Divide that product by 0.04 and record the total.*
....* the total cannot be greater than 2.375 or less than 0.
12). Add together the 4 totals.
13). Multiply that by 100.
14). Divide by 6.
15) The final number is the QB rating.
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Post by blb on Jun 13, 2022 15:24:38 GMT -6
I would like to know what the rationale is for the subtracts, divides, adds, multiplies (i.e. the Math) by the different categories.
On surface appears entirely random.
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QB Rating
Jun 13, 2022 15:28:25 GMT -6
via mobile
Post by Defcord on Jun 13, 2022 15:28:25 GMT -6
I would like to know what the rationale is for the subtracts, divides, adds, multiplies (i.e. the Math) by the different categories. On surface appears entirely random. So smart guys can tell you why the qb is better or worse in a way the coach can’t figure out. That way they have a spot on the TV as well. |
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Post by blb on Jun 13, 2022 15:53:45 GMT -6
Logically - how can a QB have a "perfect passer rating" unless every pass thrown goes for a TD, or at least is completed (100% completions)?
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Post by chi5hi on Jun 13, 2022 16:02:37 GMT -6
I would like to know what the rationale is for the subtracts, divides, adds, multiplies (i.e. the Math) by the different categories. On surface appears entirely random. Yeah, that was my initial reaction, too...but it was given to me by a football statistics guy from MaxPreps. And the figures match the stats if you ever care to check it out. I was always curious about those QB ratings and so I asked the guy. Then again as I recall...he drank a lot... |
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Post by spreadattack on Jun 14, 2022 9:12:10 GMT -6
Some years ago I got ahold of a formula for computing QB rating. Thumbing through some old notebooks I found it. Here it is. Does anyone concur? Not? 1). Divide completions by attempts. 2). Subtract 0.3. 3). Divide that by 0.2 and record the total.* ....* the total cannot be greater than 2.375 or less than 0. 4). Divide passing yards by pass attempts. 5). Subtract 3. 6). Divide by 4 and record the total. 7). Divide the number of TD passes by pass attempts. 8). Divide that by 0.05 and record the total. 9). Divide the number of interceptions by pass attempts. 10). Subtract that number from 0.095. 11). Divide that product by 0.04 and record the total.* ....* the total cannot be greater than 2.375 or less than 0. 12). Add together the 4 totals. 13). Multiply that by 100. 14). Divide by 6. 15) The final number is the QB rating.  In all seriousness, it's not perfect but "adjusted yards per attempt" is pretty good to me. It's just basically yards per attempt with adjustments for sacks, touchdowns and interceptions. Formula is: - (Passing yards, minus sack yards, plus (20, multiplied by passing TDs), minus (45, multiplied by interceptions)), divided by (total pass attempts plus sacks taken) In other words, it's all passing yards (minus sack yards), with 20 "yards" for every TD and 45 "yards" removed for every interception, divided by all dropbacks. Not perfect but is probably more informative than a lot of these "passer ratings" re: efficiency, etc. |
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Post by blb on Jun 14, 2022 12:41:59 GMT -6
And again - why such random numbers as plus 20 yards for every TD and 45 yards removed for every INT?
Also, why are Sack yards counted against QB rating when that's more likely a "team" thing?
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Post by cqmiller on Jun 14, 2022 12:49:06 GMT -6
I know the formula for college and pro is different... basically it is just weighted average designated by someone as a "standard". I use the college one, since I'm trying to get my kids to compare their performance to guys at the level above us...
Is it perfect... no
Is it a standard they can use to compare to others... yes
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