Ages of Morwong assigned from otoliths by two readers.

Description

Ages assigned by two different readers to the otoliths of Jackass Morwong (Nemadactylus macropterus).

Format

A data frame with 58 paired observations on the following 2 variables.

readerA

Ages assigned by Reader A

readerB

Ages assigned by Reader B

Topic(s)

  • Age Comparison

  • Age Precision

  • Age Bias

  • Ageing Error

Source

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. Available at http://web-test.afma.gov.au/wp-content/uploads/2010/07/r03_1724b.pdf.

Examples

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data(Morwong3)
str(Morwong3)
head(Morwong3)
plot(readerB~readerA,data=Morwong3)
with(Morwong3,table(readerA,readerB))

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