## 3P sample log scalingPacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971 - Nature - 15 pages |

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100 individual logs 100 truckloads 2-percent standard error 20-percent CV 3P portion 3P SAMPLE LOG 3P sample selection 40 feet advance estimate board feet coded guessed volume coefficient of variation column means create the random cruise D F 4 9 Decimal C log defective Douglas-fir Douglas-fir stratum estimate of total estimated total volume expansion factor gross log group of logs guessed log volume IKPI individual sample logs L. R. Grosenbaugh log rule logs being sampled LU LU mate of total measured to guessed nonsample log number of logs number of sample preceding column raft tests random numbers ratio SAMPLE LOG SCALING sampling error scaled volume Scribner Decimal segments of whole set of numbers set of random Stratum codes stratum coefficient stratum total volume stratum volume sure tally form THREE TESTS timber sale truck test truckloads of logs TRUK volume all strata whole log Y.KPI