Results of summer flounder inter-reader precision test against randomly selected samples from the first quarter of the 2009 commercial samples from the Partnership for Mid-Atlantic Fisheries Science. Scales were used for age determinations. (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 BJ; those below the shaded boxes were given higher ages by NC. Total age frequencies are given by age for both readers. (C) Results summary, indicating NC's results relative to each of BJ's ages.

Species: Summer Flounder Test Type: Inter-reader Precision
Sample Source: 2009 PMAFS Commercial Samples (Q1) Structure: Scales
Age Reader: NC* vs BJ Date Completed: May 2010
Number Aged: unknown Number Tested: 49
CV: 7.77% Agreement: 65.3%
Bowker's Test: Not significant    
  *NC = trainee


A. Agreement Plot

Summer Flounder Agreement Plot

B. Age-Frequency Table

Age Age (BJ)
(NC) 0 1 2 3 4 5 6 7 Total
Total 6 15 10 10 6 2 49
0
1
2 3 3 1 7
3 3 12 1 16
4 5 3 8
5 3 7 2 1 13
6 4 4
7 1 1


C. Results Summary

Age (BJ) N N Agreed Percent Agreed Average Age (NC)
2 6 3 50 % 2.50
3 15 12 80 % 2.80
4 10 5 50 % 4.00
5 10 7 70 % 4.70
6 6 4 67 % 5.67
7 2 1 50 % 6.00


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(File Modified Nov. 08 2013)