Results of yellowtail flounder inter-reader precision test
using randomly selected samples from the 2004 Canadian (DFO) commercial samples.
(A) Age-bias plot, showing the average age attained by SP versus the ages attained by VS.
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 SP; those
below the shaded boxes were given higher ages by VS. Total age
frequencies are given by age for both readers. (C) Results summary, indicating SP's results
relative to each of VS's ages.
| Species: |
Yellowtail Flounder
| Test Type: |
Inter-reader Precision
| | Sample Source: |
2004 Canadian Commercial Samples
| Age Reader: |
SP* vs. VS
| | Date Completed: |
January 2005
| Sample Size: |
162
| | CV: |
4.83%
| Agreement: |
74.7%
| | Bowker's test: |
Not significant
| | *SP = trainee
|
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A. Age-Bias Plot
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B. Age-Frequency Table
| Age | Age (SP) | | | (VS) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Total | | Total | | | 33 | 53 | 37 | 19 | 13 | 3 | 3 | 1 | 162 | | 0 | |
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1 |
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| 1 | | 2 |
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| 29 |
2 |
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| 31 | | 3 |
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3 | 43 |
4 |
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| 50 | | 4 |
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8 | 26 |
1 |
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| 35 | | 5 |
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6 | 15 |
2 |
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| 23 | | 6 |
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1 |
2 | 4 |
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| 7 | | 7 |
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1 |
4 | 2 |
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| 7 | | 8 |
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3 |
| 1 |
| 4 | | 9 |
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1 |
2 | 1 | 4 |
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C. Results Summary
| Age (VS) |
N |
N Agreed |
Percent Agreed |
Ave Age (SP) | | 1 | 1 | 0 | 0 % | 2.00 | | 2 | 31 | 29 | 94 % | 2.06 | | 3 | 50 | 43 | 86 % | 3.02 | | 4 | 35 | 26 | 74 % | 3.80 | | 5 | 23 | 15 | 65 % | 4.83 | | 6 | 7 | 4 | 57 % | 5.43 | | 7 | 7 | 2 | 29 % | 6.14 | | 8 | 4 | 1 | 25 % | 6.50 | | 9 | 4 | 1 | 25 % | 8.00 |
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