FSAdata (version 0.3.0)

Croaker1: Ages of Atlantic Croaker assigned from otoliths by two readers.

Description

Otolith age of Atlantic croaker (Micropogonias undulatus) from two readers.

source

Extracted from Figure 2 in Chapter 1 (Atlantic Croaker) of the VMRC Final Report on Finfish Ageing, 1999 by the http://ww2.odu.edu/sci/cqfe/{Center for Quantitative Fisheries Ecology} at Old Dominion University.

Topic(s)

• Age comparison
• Age precision
• Age Bias
• Ageing error

concept

Age Precision Bias 'Age Comparison'

Examples

data(Croaker1)
str(Croaker1)
head(Croaker1)
plot(reader2~reader1,data=Croaker1)
xtabs(~reader1+reader2,data=Croaker1)