Results of silver hake inter-reader precision test using randomly selected samples from the 2004 NEFSC spring survey. (A) Age-bias plot, showing the average age attained by KL versus the ages attained by NS. Error bars indicate 95% confidence intervals. (B) Age-frequency table, showing each reader's ages. Numbers in the shaded boxes indicate agreement between the two readers. Numbers above this diagonal indicate fish which were given higher ages by KL; those below the shaded boxes were given higher ages by NS. Total age frequencies are given by age for both readers. (C) Results summary, indicating KL's results relative to each of NS's ages.

Species: Silver Hake Test Type: Inter-reader Precision
Sample Source: 2004 Spring Survey (200402) Age Reader: KL* vs. NS
Date Completed: October 2005 Sample Size: 99
CV: 5.21% Agreement: 76.8%
Bowker's test: P = 0.002
  *KL aged this year's samples in lieu of the the primary reader (NS).


A. Age-Bias Plot

Silver Hake Age-Bias Plot

B. Age-Frequency Table

Age Age (KL)
(NS) 0 1 2 3 4 5 6 Total
Total 9 41 38 7 2 2 99
0
1 8 1 9
2 1 39 1 41
3 1 21 22
4 16 7 1 24
5 1 2 3
6


C. Results Summary

Age (NS) N N Agreed Percent Agreed Ave Age (KL)
1 9 8 89 % 1.11
2 41 39 95 % 2.00
3 22 21 95 % 2.95
4 24 7 29 % 3.38
5 3 1 33 % 5.67


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