Researchers have observed that rainforest areas next to clear-cuts (less than 100 meters away) have a reduced tree biomass compared to rainforest areas far from clear-cuts. To go further, Laurance et al. (1997) tested whether rainforest areas more distant from the clear-cuts were also affected. They compiled data on the biomass change after clear-cutting (in tons/hectare/year) for 36 rainforest areas between 100 m and several kilometers from clear-cuts. The data are -10.8, -4.9, -2.6, -1.6, -3, -6.2, -6.5, -9.2, -3.6, -1.8, -1.0, 0.2, 0.2, 0.1, 0.3, −1.4, −1.5, -0.8, 0.3, 0.6, 1.0, 1.2, 2.9, 3.5, 4.3, 4.7, 2.9, 2.8, 2.5, 1.7, 2.7, 1.2, 0.1, 1.3, 2.3, 0.5. CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt! These measurements are plotted in the histogram. 14 12- 10- 8 Frequency 2 0 -12.5 -10 -7.5 -5 -2.5 0 2.5 5 Biomass change Whitlock & Schluter, The Analysis of Biological Data, 3e © 2020 W. H. Freeman and Company Test whether there is a change in biomass of rainforest areas following clear-cutting, using a test that does not assume a normal distribution.
Researchers have observed that rainforest areas next to clear-cuts (less than 100 meters away) have a reduced tree biomass compared to rainforest areas far from clear-cuts. To go further, Laurance et al. (1997) tested whether rainforest areas more distant from the clear-cuts were also affected. They compiled data on the biomass change after clear-cutting (in tons/hectare/year) for 36 rainforest areas between 100 m and several kilometers from clear-cuts. The data are -10.8, -4.9, -2.6, -1.6, -3, -6.2, -6.5, -9.2, -3.6, -1.8, -1.0, 0.2, 0.2, 0.1, 0.3, −1.4, −1.5, -0.8, 0.3, 0.6, 1.0, 1.2, 2.9, 3.5, 4.3, 4.7, 2.9, 2.8, 2.5, 1.7, 2.7, 1.2, 0.1, 1.3, 2.3, 0.5. CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt! These measurements are plotted in the histogram. 14 12- 10- 8 Frequency 2 0 -12.5 -10 -7.5 -5 -2.5 0 2.5 5 Biomass change Whitlock & Schluter, The Analysis of Biological Data, 3e © 2020 W. H. Freeman and Company Test whether there is a change in biomass of rainforest areas following clear-cutting, using a test that does not assume a normal distribution.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Researchers have observed that rainforest areas next to clear-cuts (less than 100 meters away) have a reduced tree biomass
compared to rainforest areas far from clear-cuts. To go further, Laurance et al. (1997) tested whether rainforest areas more
distant from the clear-cuts were also affected. They compiled data on the biomass change after clear-cutting (in
tons/hectare/year) for 36 rainforest areas between 100 m and several kilometers from clear-cuts. The data are
-10.8, -4.9, -2.6, -1.6, -3, -6.2, -6.5, -9.2,
-3.6, -1.8, -1.0, 0.2, 0.2, 0.1, 0.3, -1.4, -1.5,
-0.8, 0.3, 0.6, 1.0, 1.2, 2.9, 3.5, 4.3, 4.7, 2.9, 2.8,
2.5, 1.7, 2.7, 1.2, 0.1, 1.3, 2.3, 0.5.
CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt!
These measurements are plotted in the histogram.
14-
12
10
Frequency
+
2
0
-12.5 -10 -7.5 -5 -2.5 0 2.5 5
LO
Biomass change
Whitlock & Schluter, The Analysis of Biological Data, 3e © 2020 W. H. Freeman and Company
Test whether there is a change in biomass of rainforest areas following clear-cutting, using a test that does not assume a
normal distribution.
Determine the P-value. Give your answer to four decimal places.
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