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Ages assigned by two different readers to the otoliths of Striped Bass (Morone saxatilis).

Format

A data frame of 458 observations on the following 2 variables:

reader1

Ages assigned by the first reader

reader2

Ages assigned by the second reader

Source

From Figure 5 in Chapter 10 (Striped Bass) of the VMRC Final Report on Finfish Ageing, 2003 by the Center for Quantitative Fisheries Ecology at Old Dominion University. CSV file

Topic(s)

  • Age Comparison

  • Age Precision

  • Age Bias

  • Ageing Error

See also

Examples

data(StripedBass5)
str(StripedBass5)
#> 'data.frame':	458 obs. of  2 variables:
#>  $ reader1: int  2 2 2 2 2 2 2 2 2 2 ...
#>  $ reader2: int  2 2 2 2 2 2 2 2 2 2 ...
head(StripedBass5)
#>   reader1 reader2
#> 1       2       2
#> 2       2       2
#> 3       2       2
#> 4       2       2
#> 5       2       2
#> 6       2       2
plot(reader2~reader1,data=StripedBass5)

xtabs(~reader1+reader2,data=StripedBass5)
#>        reader2
#> reader1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 19 20
#>      2  47  2  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
#>      3   4 28  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
#>      4   0  0  8  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
#>      5   0  0  3 52  0  1  0  0  0  0  0  0  0  0  0  0  0  0
#>      6   0  0  0  1 14  4  0  0  0  0  0  0  0  0  0  0  0  0
#>      7   0  0  0  0  3 84  3  0  0  0  0  0  0  0  0  0  0  0
#>      8   0  0  0  0  0  6 30  2  1  0  0  0  0  0  0  0  0  0
#>      9   0  0  0  0  0  0  1 13  3  0  0  0  0  0  0  0  0  0
#>      10  0  0  0  0  0  0  1  5 72  2  1  0  0  0  0  0  0  0
#>      11  0  0  0  0  0  0  0  0  5 17  1  0  0  0  0  0  0  0
#>      12  0  0  0  0  0  0  0  0  2  0  8  2  0  0  0  0  0  0
#>      13  0  0  0  0  0  0  0  0  0  0  2  8  2  0  0  0  0  0
#>      14  0  0  0  0  0  0  0  0  0  0  1  1  9  1  0  0  0  0
#>      15  0  0  0  0  0  0  0  0  0  0  0  0  2  1  0  0  0  0
#>      16  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1  0  0  0
#>      17  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1  0  0
#>      18  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1  0  0
#>      20  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1  0
#>      21  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  1