Results of cod inter-reader precision test
using randomly selected samples from the 2004 NEFSC autumn survey (Gulf of Maine stock only).
(A) Agreement plot, showing the ages attained byeach 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 ages. Numbers above this diagonal indicate fish which were given higher ages by NS; those below the shaded boxes were given higher ages by NM. Total age frequencies are given by age for both readers. (C) Results summary, indicating NM's results
relative to each of NS's ages.
2004 Autumn Survey (200407)
Gulf of Maine
NM* vs. NS
*NM aged this year's samples in lieu of the the primary reader (NS). NM was the previous primary age reader.