Results of yellowtail flounder inter-reader precision test using randomly selected samples from the second quarter of the 2008 NEFSC commercial samples. (A) Agreement plot, showing the ages attained by each reader. A small amount of noise was added to the data to improve visibility of overlapping data points. (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 SM; those below the shaded boxes were given higher ages by SE. Total age frequencies are given by age for both readers. (C) Results summary, indicating SE's results relative to each of SM's ages.

Species: Yellowtail Flounder Test Type: Inter-reader Precision
Sample Source: 2008 Commercial Samples (Q2)  
Age Reader: SE* vs. SM** Date Completed: March 2009
Number Aged: 1087 Number Tested: 89
CV: 3.12% Agreement: 82.8%
Bowker's Test: Not significant
  *SE = trainee.
  **SP married to become SM early in 2009.


A. Agreement plot

Yellowtail Flounder Agreement Plot

B. Age-Frequency Table

Age Age (SM)
(SE) 0 1 2 3 4 5 6 Total
Total 41 47 8 3 99
0
1
2
3 37 6 43
4 4 39 4 47
5 2 4 1 7
6 2 2


C. Results Summary

Age (SM) N N Agreed Percent Agreed Average Age (SE)
3 41 37 90 % 3.10
4 47 39 83 % 3.91
5 8 4 50 % 4.50
6 3 2 67 % 5.67


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(File Modified Nov. 08 2013)