Planning Research for Resource DecisionsIowa State University Press, 1970 - Всего страниц: 183 Scientists, research, and resource management. Planning research programs. Problem analysis and project planning. Scientific methods and models. Defining the study objective. Selecting study procedures. Preparing written study plans. Maintaining essential research records. Writing for publication. Being your own editor. Final throughts. An exhibit of research plans. |
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Стр. 73
... samples enough to estimate the variation around the sample means . If the inferences or estimates are to apply only to those individuals included in the sample or experiment , or if no objective measure of validity is required , then ...
... samples enough to estimate the variation around the sample means . If the inferences or estimates are to apply only to those individuals included in the sample or experiment , or if no objective measure of validity is required , then ...
Стр. 180
... sample . Proportions may differ among trees in the sample for four reasons . First , of course , there will be random variation from one individual to the next that will be reflected in variance estimates . Second , taller trees will ...
... sample . Proportions may differ among trees in the sample for four reasons . First , of course , there will be random variation from one individual to the next that will be reflected in variance estimates . Second , taller trees will ...
Стр. 182
Carl H. Stoltenberg. SAMPLING PROCEDURE Samples of white pine trees will be drawn in the following manner . A sample of 500 trees will be gathered in groups of 50. Two such 50 - tree groups will be located in New York , two in New ...
Carl H. Stoltenberg. SAMPLING PROCEDURE Samples of white pine trees will be drawn in the following manner . A sample of 500 trees will be gathered in groups of 50. Two such 50 - tree groups will be located in New York , two in New ...
Содержание
SCIENTISTS RESEARCH AND RESOURCE MANAGEMENT | 3 |
PLANNING RESEARCH PROGRAMS | 13 |
PROBLEM ANALYSIS AND PROJECT PLANNING | 25 |
Авторские права | |
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Часто встречающиеся слова и выражения
alternatives areas authorship average blister-rust infection clientele condition class considered cost decision-makers define dependent determine develop eastern white pine efficient estimate evaluating even-aged example experience factors fatal infection FER-NE Forestry Grammar of Science gross yield growth rates hardwoods harvest hypothesis important independent variables inductive reasoning infection rate initial stand condition injury rate management and pest-control manuscript measure methods needed NEFES noun number of injuries observed overstory pest pest-control activities prediction problem analysis profitable project plan pruning publication punched cards rate of fatal reader records relationship research planning resource manager resource research sample scientific scientific methods scientists selected shortleaf pine significant solve specific statistical study objective study plan study procedures stumpage timber tree U.S. Forest Service various verb volume growth volume loss weevil injury white pine production white pine stands writing