Ages of Morwong assigned from otoliths by two readers.
Ages assigned by two different readers to the otoliths of Jackass Morwong (Nemadactylus macropterus).
A data frame with 58 paired observations on the following 2 variables.
Ages assigned by Reader A
Ages assigned by Reader B
Age Comparison
Age Precision
Age Bias
Ageing Error
From Table 7 of Restall, J.E., and K. Krusic-Golub. 2004. Development of jackass morwong age-length keys for 2000-2002. Final report to Australian Fisheries Management Authority. 13 pp. Primary Industries Research Victoria, Queenscliff. Was (is?) available at http://web-test.afma.gov.au/wp-content/uploads/2010/07/r03_1724b.pdf.
data(Morwong3) str(Morwong3) head(Morwong3) plot(readerB~readerA,data=Morwong3) with(Morwong3,table(readerA,readerB))
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