CASE STUDIES IN BIOMETRY: Chapter 4. Measurement Error Models for Gypsy Moth Studies John P. Buonaccorsi The file ch4a.dat contains the burlap data, with the following variables: 1. mburlap = mean burlap count value obtained over 12 subplot values. 2. megg = mean egg mass density per acre obtained over 21 subplot values. 3. seegg = estimated standard error of mean egg mass density obtained over 21 subplot values. Joe Elkinton has provided these data and given permission for its use in Case Studies in Biometry.