The JQ is a statistical comparison of jammers based on their rankings in five categories. The maximum JQ a jammer can receive is 50. The table below illustrates the evaluation of a JQ for the February 27th bout between ToRD’s CN Power and the Rideau Valley Vixens (only the top 5 are shown)*.
|Jammer||Total Points||Points Per Jam||Plus/ Minus||Jam %||Lead %||JQ|
|Lunchbox (CNP)||48 (9)||4.36 (9)||+36 (9)||23.4 (8)||72.7 (9)||44|
|Land Shark CNP)||53 (10)||3.78 (7)||+45 (10)||29.7 (9)||57.1 (7)||43|
|Defecaitlin (CNP)||45 (8)||4.5 (10)||+29 (8)||21.2 (6)||70 (8)||40|
|Marvel S. Maven (CNP)||25 (7)||4.16 (8)||+20 (7)||12.7 (3)||100 (10)||35|
|Soul Rekker (RVV)||19 (6)||1.18 (4)||-35 (5)||34 (10)||50 (6)||31|
CN Power’s Lunchbox received the highest JQ. Interestingly, she didn’t actually lead in any of the five categories but placed second in four and third in the fifth (the numbers in brackets designate the ranking points, 10 for first place, etc). So for this bout, consistency was rewarded, as I imagine it always will be. Overall, all of the CN Power jammers had their way with the Vixens; despite a huge effort by Soul Rekker, the difference was in the jammers. The game was essentially over after the fourth jam when Defecaitlin (that’s Dust Bunny to all you Gore Gore fans) skated to a double grand slam and more than doubled the lead to 19-2.
This particular example doesn’t provide ideal data for a number of reasons. For one, it’s just one game, and there were only eight skaters who jammed a statically significant amount of times (I cut it off at 6 jams). The more data available, the more accurate the JQ, so during ToRD’s regular season, the teams will play enough games and get in enough jams to make a much more accurate judge of the statistical significance a jammer has to her team.
The data in this example are also skewed heavily in CN Power’s favour given the one-sided nature of the bout (199-49). I wouldn’t expect such high JQs over an extended period of time or among a much more even playing field. .
In the next post I’ll look at each category in more detail and justify the decision to include it.
* These stats are unofficial and are based on post bout analysis of video shot by Layer9.