| % File src/library/datasets/man/OrchardSprays.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{OrchardSprays} |
| \docType{data} |
| \alias{OrchardSprays} |
| \title{Potency of Orchard Sprays} |
| \description{ |
| An experiment was conducted to assess the potency of various |
| constituents of orchard sprays in repelling honeybees, using a |
| Latin square design. |
| } |
| \usage{OrchardSprays} |
| \format{ |
| A data frame with 64 observations on 4 variables. |
| \tabular{rlll}{ |
| [,1] \tab rowpos \tab numeric \tab Row of the design\cr |
| [,2] \tab colpos \tab numeric \tab Column of the design\cr |
| [,3] \tab treatment \tab factor \tab Treatment level\cr |
| [,4] \tab decrease \tab numeric \tab Response |
| } |
| } |
| \details{ |
| Individual cells of dry comb were filled with measured amounts of lime |
| sulphur emulsion in sucrose solution. Seven different concentrations |
| of lime sulphur ranging from a concentration of 1/100 to 1/1,562,500 |
| in successive factors of 1/5 were used as well as a solution |
| containing no lime sulphur. |
| |
| The responses for the different solutions were obtained by releasing |
| 100 bees into the chamber for two hours, and then measuring the |
| decrease in volume of the solutions in the various cells. |
| |
| An \eqn{8 \times 8}{8 x 8} Latin square design was used and the |
| treatments were coded as follows: |
| \tabular{rl}{ |
| A \tab highest level of lime sulphur\cr |
| B \tab next highest level of lime sulphur\cr |
| . \tab \cr |
| . \tab \cr |
| . \tab \cr |
| G \tab lowest level of lime sulphur\cr |
| H \tab no lime sulphur |
| } |
| } |
| \source{ |
| Finney, D. J. (1947) |
| \emph{Probit Analysis}. |
| Cambridge. |
| } |
| \references{ |
| McNeil, D. R. (1977) |
| \emph{Interactive Data Analysis}. |
| New York: Wiley. |
| } |
| \examples{ |
| require(graphics) |
| pairs(OrchardSprays, main = "OrchardSprays data") |
| } |
| \keyword{datasets} |