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Sampling for area estimation: A comparison of full-frame sampling with the sample segment approachThe effect of sampling on the accuracy (precision and bias) of crop area estimates made from classifications of LANDSAT MSS data was investigated. Full-frame classifications of wheat and non-wheat for eighty counties in Kansas were repetitively sampled to simulate alternative sampling plants. Four sampling schemes involving different numbers of samples and different size sampling units were evaluated. The precision of the wheat area estimates increased as the segment size decreased and the number of segments was increased. Although the average bias associated with the various sampling schemes was not significantly different, the maximum absolute bias was directly related to sampling unit size.
Document ID
19830017854
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Hixson, M. M. (Purdue Univ. West Lafayette, IN, United States)
Bauer, M. E. (Purdue Univ. West Lafayette, IN, United States)
Davis, B. J. (Indiana Bell Telephone Co. Indianapolis, United States)
Date Acquired
September 4, 2013
Publication Date
July 1, 1979
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
SR-P1-04160
NASA-CR-171627
LARS-062779
NAS 1.26:171627
E83-10256
Accession Number
83N26125
Funding Number(s)
CONTRACT_GRANT: NAS9-14970
PROJECT: PROJ. AGRISTARS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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