Results of all QA/QC Exercises
for Yellowtail Flounder, Limanda ferruginea

Limanda ferruginea


Initials for each age reader are given. All samples were collected by the NEFSC unless otherwise indicated. Bowker’s test results either show the P-value, ‘n/s’ (not significant at the α = 0.05 level), or are left blank where the test was not applicable.

Sample SourceTest Type Date Completed Age Reader Sample Size CV (%) Agreement (%) Bowker's test
2008 Commercial Samples (Q4) Precision 5/2009 SM* 105 4.48 81.9 n/s
2008 Commercial Samples (Q3) Precision 4/2009 SM* 100 4.55 80.0 0.016
2008 Commercial Samples (Q2) Precision 3/2009 SE vs. SM* 99 3.12 82.8 n/s
2008 Commercial Samples (Q2) Precision 3/2009 SM* 99 3.42 81.8 0.003
2008 Commercial Samples (Q1) Precision 12/2008 SP 102 2.84 85.3 n/s
2008 Autumn Survey (200807) Precision 12/2008 SP 75 5.51 78.7 0.02
Yellowtail Reference Collection Accuracy 6/2008 SP 79 1.62 91.1  
2008 Spring Survey (200803) Precision 5/2008 SP 75 2.05 89.3 n/s
2007 Commercial Samples (Q4) Precision 5/2008 SP 100 1.83 91.0  
2007 Commercial Samples (Q3) Precision 5/2008 SP 100 6.54 75.0 0.006
2007 Commercial Samples (Q2) Precision 4/2008 SP 100 3.29 82.0 n/s
2007 Commercial Samples (Q1) Precision 4/2008 SP 93 3.72 80.6 0.006
2007 Autumn Survey (200709) Precision 12/2007 SP 75 3.93 80.0 n/s
Yellowtail Reference Collection Accuracy 5/2007 SP 75 1.16 93.3  
2007 Spring Survey (200703) Precision 5/2007 SP 75 2.41 88.0 n/s
2006 Commercial Samples (Q4) Precision 5/2007 SP 70 4.94 78.6 0.005
2006 Commercial Samples (Q3) Precision 5/2007 SP 75 1.97 90.7  
2006 Commercial Samples (Q2) Precision 4/2007 SP 75 2.35 84.0 n/s
2006 Commercial Samples (Q1) Precision 3/2007 SP 70 3.25 78.6 n/s
2006 Autumn Survey (200610) Precision 2/2007 SP 75 3.57 88.0 n/s
2006 Spring Survey (200604) Precision 5/2006 SP 50 1.56 90.0  
2005 Commercial Samples (Q1-4) Precision 5/2006 SP 79 2.48 87.3 n/s
2005 Autumn Survey (200510) Precision 3/2006 SP 54 5.05 81.5 n/s
2004 Commercial Samples (Q1-4), 2004 Autumn Survey (200407), & 2005 Spring Survey (200503) Precision 6/2005 SP 100 6.11 73.0 n/s
2004 Commercial Samples (Q1-4), 2004 Autumn Survey (200407), & 2005 Spring Survey (200503) Precision 6/2005 VS 100 6.64 71.0 n/s
2005 Canadian (DFO) Spring Survey (NED2005001) Precision 4/2005 VS 100 1.79 92.0  
2004 Canadian (DFO) Commercial Samples Precision 1/2005 SP vs. VS 162 4.83 74.7 n/s
2004 Canadian (DFO) Commercial Samples Precision 1/2005 VS 167 2.52 86.2 n/s
2004 Canadian (DFO) Spring Survey (TEM2004004) Precision 2004 VS 97 3.97 79.4 n/s
2004 Winter Survey (200401) Precision 5/2004 VS 18 0.87 94.4  
2003 Autumn Survey (200306) Precision 5/2004 VS 82 4.36 81.7 n/s

*SP married to become SM early in 2009.



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