Practice Test Geeks(CF) Certified Forester Exam Practice Test
← All CF Flashcard Decks

Data Analysis & Reporting Flashcards

7 cards from real CF practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Data Analysis & Reporting flashcards as text

  1. Which growth model type assumes that a tree's growth rate decreases as it approaches a maximum size, forming an S-shaped curve?

    Answer: Sigmoidal (logistic) model

    Sigmoidal models like the Chapman-Richards or logistic curve describe slow early growth, rapid middle growth, and slowing near maximum size.

  2. A forester wants to estimate timber volume for an entire watershed from a sample of plots. After calculating the mean volume per hectare, she multiplies by total watershed area. This is an example of:

    Answer: Expansion by area

    Expansion by area multiplies the per-unit-area estimate by the total area to obtain a population total.

  3. In a Geographic Information System (GIS) analysis, which data type is best suited for representing continuous forest canopy cover across a landscape?

    Answer: Raster data

    Raster data represents continuous spatial variables like canopy cover as a grid of cells, each with a value.

  4. A site index curve for a forest stand is used primarily to:

    Answer: Evaluate site productivity based on height-age relationships

    Site index uses dominant tree height at a base age (commonly 25 or 50 years) to index the productive potential of a site.

  5. When reporting forest inventory results, the 95% confidence interval means that:

    Answer: There is a 95% probability the true population mean falls within this interval

    A 95% confidence interval implies that if sampling were repeated many times, 95% of such intervals would contain the true population parameter.

  6. A forester records the number of dead trees per plot across 30 plots. Which chart type best visualizes the frequency distribution of these counts?

    Answer: Histogram

    A histogram displays the frequency distribution of a single continuous or count variable, making it ideal for showing how plot-level dead tree counts are distributed.

  7. In LiDAR-based forest inventory, which metric is most directly used to estimate canopy height?

    Answer: Normalized height of returns above ground

    Normalized height (above-ground elevation of LiDAR returns after subtracting the ground surface) directly represents canopy structural height.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. eforester.org — Eligibility, fees, renewal, test delivery, passing score, retake policy, test dates · verified Oct 2026