CONTENIS 



PAGE 



FOEEI'yORD, ii 



INTRODUCTION 1 



Purpose of Study ..... , . o 1 



Sample- Log Scaling .... o . 2 



Tree Measurement . 3 



Sampling in Tree Measured Sales. ........ 5 



Accuracy Standards « ..<,.,.....,.. . 6 



STUDY METHODS . « , , 8 



Collection of Data , » . , 8 



First Sample Analysis. . . ..... 8 



Check Scale Analysis .............. 9 



RESULTS OF SAMPLE TREE MEASURE11-5ENT STUDY. ...... 9 



Randomized Samplings 9 



Stratified Random Sampling « . , <, . , . . . . , 11 



Field Procedure for Collecting First Sample. . . 15 



The Check Scale 16 



Size of Samples, «....,.... 20 



Applying the Check Scale Correction Factor ... 25 



The Possible Saving by Sampling. ..... , 25 



LITERATURE CITED, .o. .o. o.,. ... .... . 29 



APPENDIX, o o o .... o . o o o . 30 



I. Sample Tree Measurement Training Outline , . 30 



IIo-DCo Incl. Formulae referred to in text ... 43 



X. Use of Random Numbers. .....,„,..„ 47 



iii 



