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Missing observations in multiyear rotation sampling designs
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gbur, E. E. |
| Copyright Year | 1982 |
| Description | Because Multiyear estimation of at-harvest stratum crop proportions is more efficient than single year estimation, the behavior of multiyear estimators in the presence of missing acquisitions was studied. Only the (worst) case when a segment proportion cannot be estimated for the entire year is considered. The effect of these missing segments on the variance of the at-harvest stratum crop proportion estimator is considered when missing segments are not replaced, and when missing segments are replaced by segments not sampled in previous years. The principle recommendations are to replace missing segments according to some specified strategy, and to use a sequential procedure for selecting a sampling design; i.e., choose an optimal two year design and then, based on the observed two year design after segment losses have been taken into account, choose the best possible three year design having the observed two year parent design. |
| File Size | 6009989 |
| Page Count | 127 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830004235 |
| Archival Resource Key | ark:/13960/t9s22t107 |
| Language | English |
| Publisher Date | 1982-06-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Sequential Analysis Earth Resources Program Agristars Project Least Squares Method Crop Inventories Data Sampling Analysis of Variance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
