Quote:
Adjusted Goals
We will use Gordie Howe's 1952-53 season as an example, a season in which Howe scored a career-high 49 goals.
The first step in this process is to calculate a schedule adjustment for each player. In order to do this, divide 82 by the number of scheduled games per team. In 1952-53 the NHL played a 70-game schedule, so the schedule adjustment is 82 / 70 = 1.17.
The roster size adjustment is computed by dividing the maximum roster size for the season in question by 18. Teams were allowed to carry a maximum of 16 skaters at home and 15 skaters on the road during the 1952-53 season, so the roster size adjustment is 15.5 / 18 = 0.86.
Next calculate the era adjustment, which we will do by dividing 6 by the league average goals per game without the player in question. In 1952-53 a total of 1006 goals were scored in 210 games. Without Howe this works out to (1006 - 49) / 210 = 4.56 goals per game, so our era adjustment is 6 / 4.56 = 1.32.
Finally, we put everything together. Take the player's actual goals and multiply by the adjustments we computed above. For Howe in 1952-53 this is 49 * 1.17 * 0.86 * 1.32 = 65 adjusted goals.
https://www.hockey-reference.com/abo...ted_stats.html
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Here's how they calculate it.