Principles of Vegetation Measurement & Assessment Content Summary Assignment #2 (30 points total) Name:________________ Complete answers and submit assignment by blackboard () by midnight on Tuesday, September 04) Describe each of the following terms and give an example related to vegetation assessment (1 pts each): Population - Sample - Accuracy - Precision - A few winters ago, I did a winter grazing and I Quadrat # kg/ha Quadrat # kg/ha wanted to estimate forage biomass for winter sheep grazing. To determine how many plots I needed to 1 0 11 1 clip, I first conducted a pilot study of 20 quadrats. Calculate the following statistics to describe this 2 79 12 35 pilot study sample: 3 240 13 19 Average = . 4 34 14 123 (2 pts) 5 40 15 168 Median = . 6 126 16 257 (2 pts) 7 40 17 65 Standard Deviation = . (2 pts) 8 35 18 138 9 175 19 22 Standard Error = . 10 244 20 55 (2 pts) A Sampling Scheme: place points on the pasture Question 9 - Subjective Subjectively 25 (3 point) map below to create a representative sample. The red circle-X symbols below represent 25 potential sampling locations. Left click on each circle-X symbol and drag to a potential sampling location on the map. (Note -- place mouse pointer over symbol, click the left mouse button, hold down left mouse button, drag to location, and release -- if you are having problems, make sure you are holding the left mouse button, not the right button).
Principles of Vegetation Measurement & Assessment Content Summary Assignment #2 (30 points total) Name:________________ Complete answers and submit assignment by blackboard () by midnight on Tuesday, September 04) Describe each of the following terms and give an example related to vegetation assessment (1 pts each): Population - Sample - Accuracy - Precision - Quadrat # kg/ha Quadrat # kg/ha 1 0 11 1 2 79 12 35 3 240 13 19 4 34 14 123 5 40 15 168 6 126 16 257 7 40 17 65 8 35 18 138 9 175 19 22 10 244 20 55 A few winters ago, I did a winter grazing and I wanted to estimate forage biomass for winter sheep grazing. To determine how many plots I needed to clip, I first conducted a pilot study of 20 quadrats. Calculate the following statistics to describe this pilot study sample: Average = . (2 pts) Median = . (2 pts) Standard Deviation = . (2 pts) Standard Error = . (2 pts) Question 9 (3 point) - A Subjective Sampling Scheme: Subjectively place 25 points on the pasture map below to create a representative sample. The red circle-X symbols below represent 25 potential sampling locations. Left click on each circle-X symbol and drag to a potential sampling location on the map. (Note -- place mouse pointer over symbol, click the left mouse button, hold down left mouse button, drag to location, and release -- if you are having problems, make sure you are holding the left mouse button, not the right button).