Results of all QA/QC Exercises
for Scup, Stenotomus chrysops

Stenotomus chrysops


Initials for each age reader are given. All samples were collected by the Northeast Fisheries Science Center (NEFSC) except where indicated otherwise. 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
2015 Commercial Samples (Q1) Precision 5/2016 NC 1055 94 2.39 80.8 n/s
2015 Autumn Survey (201504) Precision 4/2016 ER 392 75 2.36 96.0  
2014 Commercial Samples (Q4) Precision 4/2015 NC 893 77 1.69 88.3 n/s
2014 Commercial Samples (Q3) Precision 4/2015 NC 408 86 5.02 68.6 n/s
2014 Autumn Survey (201404) Precision 2/2015 NC vs. DC 366 59 1.57 89.8 n/s
2013 Autumn Survey (201304) Precision 4/2014 DC 251 50 0.26 98.0  
2013 Spring Survey (201302) Precision 4/2014 DC 177 39 0.40 97.4  
2013 Commercial Samples (Q1-4) Precision 3/2014 DC 2773 98 1.53 87.8 n/s
2012 Commercial Samples (Q1-4) Precision 5/2013 DC 2437 98 2.42 85.7 n/s
2012 Autumn Survey (201204) Precision 4/2013 DC 453 79 4.05 88.6 n/s
2012 Spring Survey (201202) Precision 2/2013 DC 180 47 0.33 97.9  
2011 Commercial Samples (Q3 & Q4) Precision 6/2012 DC 920 99 1.10 92.9  
2011 Commercial Samples (Q1 & Q2) Precision 6/2012 DC 1254 99 1.93 86.9 n/s
2011 Autumn Survey (201105) Precision 5/2012 DC 654 99 4.25 90.9  
2011 Spring Survey (201102) Precision 6/2011 DC 150 49 2.47 87.8 n/s
2010 Commercial Samples (Q3 & Q4) Precision 4/2011 DC 1004 99 2.61 83.8 n/s
2010 Commercial Samples (Q2) Precision 3/2011 DC 746 99 2.18 83.8 n/s
2010 Commercial Samples (Q1) Precision 3/2011 DC 668 95 1.20 92.6  
2010 Autumn Survey (201004) Precision 3/2011 DC 705 99 2.48 91.9  
2010 Massachusetts Spring Survey (201091) Precision 11/2010 DC 204 49 0.81 93.9  
2009 Commercial Samples (Q4) Precision 6/2010 DC 586 21 5.58 52.4 0.019
2009 Commercial Samples (Q3) Precision 6/2010 DC 364 24 0.00 100.0  
2009 Commercial Samples (Q2) Precision 6/2010 DC 559 24 3.37 62.5 n/s
2009 Commercial Samples (Q1) Precision 6/2010 DC 1626 46 0.00 100.0  
2009 Autumn Survey (200904) Precision 4/2010 DC 519 49 0.58 98.0 n/s
2009 Spring Survey (200902) Precision 4/2010 DC 63 24 4.58 87.5 n/s
2008 Commercial Samples (Q4) Precision 5/2009 DC 716 93 2.19 89.2 n/s
2008 Commercial Samples (Q3) Precision 4/2009 DC 660 73 7.53 65.8 n/s
2008 Commercial Samples (Q2) Precision 3/2009 DC 1064 97 3.19 76.3 0.030
2008 Commercial Samples (Q1) Precision 3/2009 DC 814 75 5.34 68.0 0.015
2008 Autumn Survey (200807) Precision 2/2009 DC 398 74 8.41 89.2 n/s
2008 Spring Survey (200803) Precision 2/2009 DC 91 49 3.42 81.6 n/s

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(File Modified Jun. 16 2016)