Red Hake, Urophycis chuss
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Jillian Price (JP) has been working with Red Hake since 2015; before that, the age reader was Grace Thornton (GT). Sectioned otoliths are viewed with reflected light.
In tests where agreement is below 90%, bias indicates either the P-value of a symmetry test or ‘n/s’ (test not significant at the α = 0.05 level). The Evans & Hoenig test was used to test bias starting 1/2022; prior to that, a Bowker's test was used.
| Sample Source | Test Type | Date Completed | Age Reader | Number Aged | Number Tested | CV (%) | Agree-ment (%) | Bias |
|---|---|---|---|---|---|---|---|---|
| 2023 Spring Survey (202302) | Precision | 7/2023 | JP | 255 | 47 | 2.42 | 87.2 | n/s |
| 2022 Autumn Survey (202204) | Precision | 4/2023 | JP | 686 | 100 | 4.26 | 90.0 | |
| 2022 Spring Survey (202202) | Precision | 3/2023 | JP | 840 | 100 | 2.46 | 86.0 | n/s |
| 2021 Spring Survey (202102) | Precision | 8/2022 | JP | 863 | 100 | 2.06 | 89.0 | 0.03 |
| 2021 Autumn Survey (202104) | Precision | 6/2022 | JP | 730 | 100 | 0.83 | 95.0 | |
| 2019 Autumn Survey (201904) | Precision | 10/2020 | JP | 661 | 100 | 0.49 | 96.0 | |
| 2019 Spring Survey (201902) | Precision | 11/2019 | JP | 857 | 100 | 2.33 | 89.0 | n/s |
| 2018 Autumn Survey (201804) | Precision | 6/2019 | JP | 541 | 91 | 1.28 | 92.3 | |
| 2018 Spring Survey (201802) | Precision | 10/2018 | JP | 495 | 94 | 3.13 | 84.0 | 0.020 |
| 2017 Autumn Survey (201704) | Precision | 8/2018 | JP | 227 | 54 | 6.14 | 81.5 | n/s |
| 2017 Spring Survey (201702) | Precision | 1/2018 | JP | 947 | 91 | 2.74 | 84.6 | n/s |
| 2016 Autumn Survey (201604) | Precision | 12/2017 | JP | 748 | 94 | 1.46 | 91.5 | |
| 2016 Spring Survey (201602) | Precision | 10/2017 | JP | 986 | 87 | 2.17 | 89.7 | n/s |
| 2015 Autumn Survey (201504) | Precision | 9/2016 | JP | 1063 | 96 | 4.34 | 85.4 | n/s |
| 2015 Spring Survey (201502) | Precision | 3/2016 | JP | 1133 | 99 | 4.15 | 77.8 | 0.038 |
| 2014 Spring Survey (201402) | Precision | 6/2015 | JP | 427 | 79 | 2.91 | 83.5 | n/s |
| 2014 Autumn Survey (201404) | Precision | 3/2015 | JP | 543 | 94 | 10.45 | 77.7 | n/s |
| 2013 Autumn Survey (201304) | Precision | 6/2014 | GT | 797 | 93 | 9.61 | 65.6 | n/s |
| 2013 Spring Survey (201302) | Precision | 6/2014 | GT | 857 | 97 | 8.57 | 66.0 | n/s |
