CRD 06-27

Table 1.   Results of all accuracy and precision exercises.  Figure numbers indicate the corresponding figures in this report.  Initials for each age reader are given; primary age readers are SS (haddock) and VS (yellowtail); also listed are NM (the previous cod age reader) and SP (the yellowtail age-reader-in-training).  Test type indicates which tests were for accuracy (A) and for precision (P).  U.S. samples are from the NEFSC surveys and commercial port samples; Canadian samples were collected by the DFO. Note that two of the yellowtail flounder exercises (those in Figures 11 and 12) used the same set of fish but were completed by different age readers.

Figure
Age
Reader
Test
Type
Source
N
Total
CV (%)
Agreement (%)
Cod (Gadus morhua)
 
1
NM
A
Reference Collection
106
1.53
90.6
               
Haddock (Melanogrammus aeglefinus)
 
2
SS
P
2004 U.S. Autumn Survey
102
0.71
95.1
 
3
SS
P
2005 U.S. Spring Survey
76
0.89
96.1
 
4
SS
P
2004 U.S. Port Samples Qtr. 1
56
0.69
92.9
 
5
SS
P
2004 U.S. Port Samples Qtr. 2
55
0.94
90.9
 
6
SS
P
2004 U.S. Port Samples Qtr. 3
44
0.25
97.7
 
7
SS
P
2004 U.S. Port Samples Qtr. 4
60
0.44
95.0
 
8
SS
A
Reference Collection
107
1.26
93.5
Yellowtail Flounder (Limanda ferruginea)
 
9
VS
P
2004 Canadian Port Samples
167
2.52
86.2
 
10
VS
P
2005 Canadian Spring Survey
100
1.79
92.0
 
11
VS
P
Combined 2004-2005 U.S. Samples
100
6.64
71.0
 
12
SP
P
Combined 2004-2005 U.S. Samples
100
6.11
73.0

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