Point-Double sampling uses a large sample of fast basal area points and a small sample of measured volume points combined to estimate volume per acre. Approved for 6 Class 1 CFE credits.
This is a quick survey to help me understand your use of point sampling and point-double sampling. No one but me will ever see your answers and your answers will never be identified with you.
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Introduction to Point-Double Sampling
Introduction
Point Sampling 1-21-21
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Point Sample Calculations: A review of the important aspects of point sampling.
Point Sample Calculations
Point Sample Review
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Point Sample Calculation Practice: Calculate volumes from your sample point
Point Sampling Calculation Practice
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Point Sample VBAR Calculations: VBARs are the heart of point sampling and point-double sampling.
VBAR Calculations
Point Sample VBAR Review
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Point-Double Sampling Procedure: How to conduct a point-double sample.
Implementation
Point-Double Sampling Procedure Review
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Point-Double Sampling Calculations: Estimate volume or weight using a point-double sample.
Calculations
Point-Double Sample Calculations Review
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Point-Double Sample Calculations Worksheet: Guided calculations for a point-double sample.
Printable Data and Table for Point-Double Sample Calculation Worksheet
Point Double Sample Calculations Worksheet Instructions
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How Good is the Answer? How does the point-double sample estimate compare to a regulare point sample estimate.
HowGoodIsTheAnswer
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Sample Size: The most often asked question, How many points?
Large and Small Sample Sizes for Point-Double Samples
Sample Size Review
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Sample Size Worksheet
Table and Sample Size Graphs for Sample Size Worksheet
Sample Size Worksheet Instructions
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Sample Size Practice: Find the number of large and small sample points for your situation.
Point-Double Sample Size Practice: Find the large and small sample sizes for your situation.
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Stand and Stock Tables: Incorporating the large sample of basal area into stand and stock tables.
Adjusting Stand and Stock Tables with Large Sample Basal Area
Stand and Stock Table Review
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Stand and Stock Table Adjustment Worksheet
Data and Table for Stand and Stock Table Adjustment Worksheet
Stand and Stock Table Adjustment Worksheet Instructions
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Your Point-Double Sample Calculations
Point-Double Sampling Calculation Practice: Required to receive CFE credit from the Society of American Foresters.