TABLE 1.

Summary Statistics of All Teams During the 2012-2014 National Football League Regular Seasons^a

Variable	Mean ± SD
SoS	0.0 ± 1.1
SRS	0.0 ± 5.1
Pass-Att	35.0 ± 3.4
Rush-Att	27.0 ± 2.6
Mean plays/drive	5.7 ± 0.2
Yards/drive	29.7 ± 2.9
Mean time/drive, min	2.6 ± 0.2
EXP-Pass-Offense	57.1 ± 71.7
EXP-Rush-Offense	–23.0 ± 19.3
EXP-Pass-Defense	–57.1 ± 38.9
EXP-Rush-Defense	23.0 ± 20.2

^aEXP-Pass-Defense, expected points contributed by passing defense; EXP-Rush-Defense, expected points contributed by rushing defense; EXP-Pass-Offense, expected points contributed by passing offense; EXP-Rush-Offense, expected points contributed by rushing offense; Pass-Att, pass attempts per game; Rush-Att, rush attempts per game; SoS, strength of schedule; SRS, simple rating system.