R/ultrasonic-data.r

In jdanielnd/gnlsmsn: Graphic package for nlsmsn

#' @name Ultrasonic
#' @title Ultrasonic Calibration
#' @description The data is a result of a ultrasonic calibration study perfomed by National Institute of Standard and Technology.
#' @format A data frame with 214 observations with y as the ultrasonic measuraments and x the metal distance
#' @docType data
#' @usage data(Ultrasonic)
#' @source  Victor H. Lachos, Dipankar Bandyopadhyay and Aldo M. Garay (2011). "Heteroscedastic nonlinear regression models based on scale mixture of skew-normal distributions". _Statistics and Probability Letters_, 81, 1208-1217.
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