Click here for search results
From guesstimates to GPStimates : land area measurement and implications for agricultural analysis, Volume 1
Author:Carletto, Calogero; Gourlay, Sydney; Winters, Paul; Country:World;
Date Stored:2013/07/30Document Date:2013/07/01
Document Type:Policy Research Working PaperSubTopics:Economic Theory & Research; Science Education; Roads & Highways; E-Business; Rural Development Knowledge & Information Systems
Language:EnglishMajor Sector:Agriculture, fishing, and forestry
Rel. Proj ID:1W-Improving Measurements Of Agricultural Productivity Through Met -- -- P132446;Region:The World Region
Report Number:WPS6550Sub Sectors:Agricultural extension and research
Collection Title:Policy Research working paper ; no. WPS 6550TF No/Name:TF012853-Improving Measurements of Agricultural Productivity through Methodologi
Volume No:1  

Summary: 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.

Official Documents
Official, scanned versions of documents (may include signatures, etc.)
File TypeDescriptionFile Size (mb)
PDF 29 pagesOfficial version*2.03 (approx.)
TextText version**
How To Order

See documents related to this project
* The official version is derived from scanning the final, paper copy of the document and is the official,
archived version including all signatures, charts, etc.
** The text version is the OCR text of the final scanned version and is not an accurate representation of the final text.
It is provided solely to benefit users with slow connectivity.

Permanent URL for this page: