Brian S. Cade. 2011. Estimating equivalence with quantile regression. Ecological Applications 21:281–289.

Supplement

Scripts and data for estimating quantile equivalence of the arsenic contamination data (Manly 2004) with the quantreg package in R.
Ecological Archives A021-013-S1.

Copyright

Authors
File list (downloads)
Description

Author(s)

Brian S. Cade
Fort Collins Science Center, U.S. Geological Survey
2150 Centre Ave., Bldg. C
Fort Collins, CO 80526
E-mail: cadeb@usgs.gov

File list

manlyars2.csv
manlyars.rtf

Description

manlyars.rtf is a text file with commands for implementing the quantile regression analyses on the arsenic data in the text file manlyars2.csv using the quantreg package in R.

manlyars2.csv
Column 1: LNARSENIC - natural log of arsenic concentration,
Column 2: SITE - an indicator variable with a 1 for treated and 0 for control sites,
Column 3: WT - weights used in analysis.

manlyars.rtf
Literature Cited

Manly, B. F. J. 2004. One-sided tests of bioequivalence with nonnormal distributions and unequal variance. Journal of Agricultural, Biological, and Environmental Statistics 9:270–283.