Results of all QA/QC Exercises
for American Plaice, Hippoglossoides platessoides

Hippoglossoides platessoides


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
2017 Commercial Samples (Q4) Precision 6/2018 JD 468 91 4.61 63.7 n/s
2017 Commercial Samples (Q3) Precision 6/2018 JD 602 97 5.20 60.2 n/s
2017 Autumn Survey (201704) Precision 3/2018 JD 329 64 5.04 75.0 n/s
2017 Commercial Samples (Q2) Precision 3/2018 JD 581 95 4.71 61.1 n/s
2017 Commercial Samples (Q1) Precision 3/2018 JD 532 100 5.79 59.0 n/s
2017 Spring Survey (201702) Precision 7/2017 JD 914 99 3.76 71.7 n/s
2016 Autumn Survey (201604) Precision 6/2017 JD 913 97 5.83 70.1 n/s
2016 Commercial Samples (Q4) Precision 5/2017 JD 453 87 3.76 67.8 n/s
2016 Commercial Samples (Q3) Precision 5/2017 JD 499 100 5.80 53.0 n/s
2016 Commercial Samples (Q2) Precision 5/2017 JD 582 97 3.85 59.8 n/s
2016 Commercial Samples (Q1) Precision 4/2017 JD 583 97 3.63 66.0 n/s
2016 Spring Survey (201602) Precision 3/2017 JD 1237 97 2.62 82.5 n/s
2015 Commercial Samples (Q4) Precision 7/2016 JD 505 101 3.67 67.3 n/s
2015 Commercial Samples (Q3) Precision 7/2016 JD 409 80 5.08 58.8 n/s
2015 Autumn Survey (201504) Precision 6/2015 JD 1148 97 2.54 84.5 n/s
2015 Commercial Samples (Q2) Precision 5/2016 JD 420 88 4.02 63.6 n/s
2015 Commercial Samples (Q1) Precision 4/2016 JD 379 79 3.36 65.8 n/s
2015 Spring Survey (201502) Precision 7/2015 JD 1037 98 2.62 84.7 n/s
2014 Autumn Survey (201404) Precision 4/2015 JD 868 98 2.90 84.7 n/s
2014 Commercial Samples (Q3-4) Precision 4/2015 JD 587 103 3.88 65.1 n/s
2014 Commercial Samples (Q2) Precision 3/2015 JD 333 69 2.95 69.6 n/s
2014 Commercial Samples (Q1) Precision 2/2015 JD 378 80 2.72 68.8 n/s
2014 Spring Survey (201402) Precision 2/2015 JD 911 97 3.81 71.1 n/s
2013 Autumn Survey (201304) Precision 12/2014 JD 726 95 4.96 74.7 n/s
2012 Autumn Survey (201204) Precision 12/2014 JD 748 98 5.25 67.4 n/s
2012 and 2013 Spring Surveys (201202 & 201302)

Precision
(fish <20cm)

12/2014 JD 487 72 4.82 84.7 n/s
2013 Spring Survey (201302) Precision 12/2014 JD 781 98 4.49 67.4 n/s
2012 Spring Survey (201202) Precision 11/2014 JD 1006 97 6.16 57.7 n/s
2013 Commercial Samples (Q4) Precision 11/2014 JD 472 94 4.50 66.0 n/s
2013 Commercial Samples (Q3) Precision 9/2014 JD 411 82 3.92 65.9 n/s
2011 Autumn Survey (201105) Precision 9/2014 JD 732 99 5.75 67.7 n/s
2013 Commercial Samples (Q2) Precision 8/2014 JD 437 84 4.37 59.5 n/s
2013 Commercial Samples (Q1) Precision 8/2014 JD 449 93 2.43 77.4 n/s
2012 Commercial Samples (Q4) Precision 7/2014 JD 428 87 6.00 56.3 n/s
2012 Commercial Samples (Q3) Precision 6/2014 JD 528 101 4.98 59.4 n/s
2012 Commercial Samples (Q2) Precision 5/2014 JD 292 63 1.72 79.4 n/s
2012 Commercial Samples (Q1) Precision 5/2014 JD 289 61 4.09 59.0 n/s
2011 Commercial Samples (Q4) Precision 4/2014 JD 364 74 3.26 71.6 n/s
2011 Commercial Samples (Q3) Precision 3/2014 JD 413 85 4.07 65.9 n/s
2011 Commercial Samples (Q2) Precision 3/2014 JD 463 95 2.71 68.4 n/s
2011 Commercial Samples (Q1) Precision 1/2014 JD 300 60 4.32 63.3 n/s
2011 Spring Survey (201102) Precision 1/2012 JD 709 97 5.60 69.1 n/s
2010 Autumn Survey (201004) Precision 9/2011 JD 605 100 4.68 72.0 n/s
2010 Commercial Samples (Q1) Precision 8/2011 JD 726 92 6.41 50.0 n/s
2008 Commercial Samples (Q1) Precision 11/2010 JD 266 57 2.87 77.2 n/s
2010 Spring Survey (201001) Precision 11/2010 JD 783 100 5.24 69.0 n/s
2009 Autumn Survey (200904) Precision 10/2010 JD vs. JB 650 179 0.67 96.1  
2009 Autumn Survey (200904) Precision 10/2010 JD 650 179 3.93 78.2 n/s
2007 Commercial Samples (Q4) Precision 8/2008 JB 296 76 2.02 80.3 n/s
2007 Commercial Samples (Q3) Precision 8/2008 JB 386 77 1.59 83.1 n/s
2007 Commercial Samples (Q2) Precision 8/2008 JB 233 78 1.33 85.9 n/s
2007 Commercial Samples (Q1) Precision 8/2008 JB 322 75 1.84 78.7 n/s
2006 Commercial Samples (Q4) Precision 8/2008 JB 264 77 1.60 84.4 n/s
2006 Commercial Samples (Q3) Precision 8/2008 JB 325 78 1.27 84.6 n/s
2006 Commercial Samples (Q2) Precision 8/2008 JB 336 77 1.39 87.0 n/s
2006 Commercial Samples (Q1) Precision 8/2008 JB 313 78 2.24 73.1 n/s
2005 Commercial Samples (Q4) Precision 8/2008 JB 330 78 2.04 78.2 n/s
2005 Commercial Samples (Q3) Precision 8/2008 JB 320 75 1.54 82.7 n/s
2005 Commercial Samples (Q2) Precision 8/2008 JB 237 77 1.98 79.2 n/s
2005 Commercial Samples (Q1) Precision 8/2008 JB 265 78 1.53 80.8 n/s
2008 Spring Survey (200803) Precision 8/2008 JB 615 69 2.00 84.1 n/s
2007 Autumn Survey (200709) Precision 8/2008 JB 598 70 2.42 85.7 n/s
2007 Spring Survey (200703) Precision 8/2008 JB 662 74 2.24 86.5 n/s
2006 Autumn Survey (200610) Precision 8/2008 JB 702 67 2.01 89.6 n/s
2006 Spring Survey (200604) Precision 8/2008 JB 715 72 1.35 91.7  
2005 Autumn Survey (200510) Precision 8/2008 JB 509 69 2.03 87.0 n/s
2004 Commercial Samples (Q4) & 2004 Autumn Survey (200407) Precision 8/2004 JB 432 161 1.69 85.7 n/s


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