From Guesstimates to Gpstimates: Land Area Measurement and Implications for Agricultural Analysis

29 Pages Posted: 20 Apr 2016 Last revised: 2 Jun 2020

See all articles by Calogero Carletto

Calogero Carletto

World Bank; World Bank - Development Research Group (DECRG)

Sydney Gourlay

World Bank - Development Data Group

Paul Winters

American University; American University - Center for Latin American & Latino Studies (CLALS)

Calogero Carletto

affiliation not provided to SSRN

Paul Conal Winters

affiliation not provided to SSRN

Multiple version iconThere are 3 versions of this paper

Date Written: July 1, 2013

Abstract

Land area measurement is a fundamental component of agricultural statistics and analysis. Yet, commonly employed self-reported land area measures used in most analysis are not only potentially measured with error, but these errors may be correlated with agricultural outcomes. Measures employing Global Positioning Systems, on the other hand, while not perfect especially on smaller plots, are likely to provide more precise measures and errors less correlated with agricultural outcomes. This paper uses data from four African countries to compare the use of self-reported and Global Positioning Systems land measures to (1) examine the differences between the measures, (2) identify the sources of the differences, and (3) assess the implications of the different measures on agricultural analysis focusing on the inverse productivity relationship. The results indicate that self-reported land areas systematically differ from Global Positioning Systems land measures and that this difference leads to potentially biased estimates of the relationship between land and productivity.

Keywords: Labor & Employment Law, Food Security, Inequality, Educational Institutions & Facilities, Educational Informatics, Education Information & Communications Technologies, Agricultural Economics

Suggested Citation

Carletto, Calogero and Gourlay, Sydney and Winters, Paul and Carletto, Calogero and Winters, Paul Conal, From Guesstimates to Gpstimates: Land Area Measurement and Implications for Agricultural Analysis (July 1, 2013). World Bank Policy Research Working Paper No. 6550, Available at SSRN: https://ssrn.com/abstract=2304085

Calogero Carletto (Contact Author)

World Bank ( email )

1818 H Street, NW
Washington, DC 20433
United States

World Bank - Development Research Group (DECRG)

1818 H. Street, N.W.
MSN3-311
Washington, DC 20433
United States

Sydney Gourlay

World Bank - Development Data Group ( email )

1818 H Street, NW
Washington, DC 20433
United States

Paul Winters

American University ( email )

4400 Massachusetts Ave, NW
Washington, DC 20016
United States

American University - Center for Latin American & Latino Studies (CLALS) ( email )

4400 Massachusetts Avenue NW
Washington, DC 20016
United States

Calogero Carletto

affiliation not provided to SSRN

No Address Available

Paul Conal Winters

affiliation not provided to SSRN

No Address Available

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
33
Abstract Views
451
PlumX Metrics