Length and number of fish caught with small and large mesh codend
Data for Exercises 5.83, 5.119, and 7.29
Fish
A data frame/tibble with 1534 observations on two variables
a character variable with values smallmesh and largemesh
length of the fish measured in centimeters
R. Millar, “Estimating the Size - Selectivity of Fishing Gear by Conditioning on the Total Catch,” Journal of the American Statistical Association, 87 (1992), 962 - 968.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
tapply(Fish$length, Fish$codend, median, na.rm = TRUE)
SIGN.test(Fish$length[Fish$codend == "smallmesh"], conf.level = 0.99)
## Not run:
dplyr::group_by(Fish, codend) %>%
summarize(MEDIAN = median(length, na.rm = TRUE))
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.