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Suppose that you work for conservation of natural areas at the Bureau of Land Management. Your section concerns the effect of wildfire on natural areas.
Suppose that you work for conservation of natural areas at the Bureau of Land Management. Your section concerns the effect of wildfire on natural areas. Your supervisor asked you to analyze a temporal trend in wildre. In particular, she is interested in the following associations: 1. Is the number of wildres per year increased? 2. Is the total burned area (in acre) peryear increased? 3. Is the burned area (in acre) per re increased? The accompanied data file contains the number of wildfires, total burned area, and burned area per the in the U.S. from 2000 to 2019. Refer to Correlations and Regressions in IMP Learning Library. Question 1. Using JN', create three scatter plots which show each association (year and number of wildres, year and total burned area, and year and burned area perre). Clearly label the graphs. Note that year should be on the x-axis. Attach the scatterplot to this report. Refer to the textbook 12.2. (15%) Question 2. Using the scatter plot created in Question 1, perform visual assessments. Describe the trend, strength, and shape of each association. Refer to the textbook 12.2. (15%) Association between year and number of wildres: Association between year and total burned area: Association between year and burned area per fire: Question 3. Using IMP, calculate correlation coefcient (r) and coefficient of determination (F) for each association and determine the values in the below table. Refer to the textbook 12.3. (15%) Variables Correlation coefcient (r) Coefcient of determination (r2) Year and number of wildres Year and total burned area Year and burned area per fire Page 1 of 2 Question 4. Based on the visual assessments and correlation coefcient in questions 2 and 3, select one of the three associations which is both strong and linear? Circle one. (5%) A. Association between year and number of wildres B. Association between year and burned area C. Association between year and burned area per re Question 5. Using IMP, calculate the regression equation for the association you have selected in question 4. Note that year is the independent variable. Write down the equation. Refer to the textbook 12.3. (15%) Question 6. Interpret the slope of the regression equation you have reported in Question 5 in words. Note that reporting the value of the slope is not sufficient. You need to describe what the value implies. Refer to the textbook 12.3. (10%) Question 7. Based on the coefcient of determination you calculated in Question 3, what percentage in the variability in the dependent variable is explained by year? Refer to the textbook 12.3. (10%) % Question 8. Based on your analysis from Questions 1 to 7, what would you report to your supervisor? Is there any trend in number of wildfires, area burned, and/or area burned per wildfire between 2000 to 2019? Describe your conclusion in words. (15%)
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