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Estimating Methods, Variability, and Sampling for Drop-Test Data

Table of Contents

Introduction

Procedures

Grid Layout

Grid Collection Method

Weighing and Calculating

A Comparison of Five Estimation Methods

Creating Contour Plots

Cross Validation

Ordinary Kriging

Triangulation

Results

Tabular

Graphical

Variability

Replicate Drops

Analysis of Variance (ANOVA) Results

Graphical Results

Sampling

Spacing in the Downrange Direction

Spacing in the Crossrange Direction

Staggered Spacing

Conclusions

References

Glossary

Appendix—Details on Cups, Error Variance, and Grid Spacing

Cups

Error Variance Estimate for GPC

Analysis of Variance

Grid Spacing

About the Author

E-mail: wo_mtdc_webmaster@fs.fed.us

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