Errors in Estimating Mean Weight and other Statistics from Mean Length
- 1 May 1980
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 109 (3) , 319-322
- https://doi.org/10.1577/1548-8659(1980)109<319:eiemwa>2.0.co;2
Abstract
Computer simulations of length‐weight data indicated that the error incurred by estimating mean weight from mean length is a function of the exponent in the length‐weight relationship and the coefficient of variation in the length‐frequency distribution. Errors were less than 10% for exponents up to 4.0 if the coefficient of variation were less than 0.1, but error increased to near 90% of actual mean weight for large exponents and coefficients of variation. Similar errors arise for other exponential relationships, such as length‐fecundity, that commonly are developed in fisheries work.This publication has 3 references indexed in Scilit:
- Fecundity of the Bloater (Coregonus hoyi) in Lake MichiganTransactions of the American Fisheries Society, 1978
- Population Dynamics and Growth of a Single Age-Class of Largemouth Bass (Micropterus salmoides) in a PondTransactions of the American Fisheries Society, 1978
- Reproductive Cycle and Fecundity of White Bass in Lewis and Clark LakeTransactions of the American Fisheries Society, 1977