Results of all QA/QC Exercises
for Red Hake, Urophycis chuss

Urophycis chuss


Initials for each age reader are given. All samples were collected by the Northeast Fisheries Science Center (NEFSC). In tests where agreement is below 90%, bias indicates either the P-value of a Bowker’s test or ‘n/s’ (test not significant at the α = 0.05 level).

Sample Source Test Type Date Completed Age Reader Number Aged Number Tested CV (%) Agreement (%) Bias
2018 Spring Survey (201802) Precision 10/2018 JP 495 94 3.13 84.0 0.020
2017 Autumn Survey (201704) Precision 8/2018 JP 227 54 6.14 81.5 n/s
2017 Spring Survey (201702) Precision 1/2018 JP 947 91 2.74 84.6 n/s
2016 Autumn Survey (201604) Precision 12/2017 JP 748 94 1.46 91.5  
2016 Spring Survey (201602) Precision 10/2017 JP 986 87 2.17 89.7 n/s
2015 Autumn Survey (201504) Precision 9/2016 JP 1063 96 4.34 85.4 n/s
2015 Spring Survey (201502) Precision 3/2016 JP 1133 99 4.15 77.8 0.038
2014 Spring Survey (201402) Precision 6/2015 JP 427 79 2.91 83.5 n/s
2014 Autumn Survey (201404) Precision 3/2015 JP 543 94 10.45 77.7 n/s
2013 Autumn Survey (201304) Precision 6/2014 GT 797 93 9.61 65.6 n/s
2013 Spring Survey (201302) Precision 6/2014 GT 857 97 8.57 66.0 n/s



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