Question

"Conservationists have despaired over destruction of tropical rain forest by logging, clearing, and burning." These words begin a report on a statistical study of the effects of logging in Borneo. Researchers compared the number of trees growing on forest plots that had never been logged (Group A) with similar plots nearby that had been logged 1 year earlier (Group B) and 8 years earlier (Group C). All plots were 0.1 hectare in area (the area equal to a square 100 meters by 100 meters). Here are the counts of trees for plots in each group:

Group A: 27 22 29 21 19 33 16 20 24 27 28 19
Group B: 12 12 15 9 20 18 17 14 14 2 17 19
Group C: 18 4 22 15 18 19 22 12 12 "

A. Create a boxplot for each of the three groups (side-by-side next to each other with space between each, OR stacked, one on top of the other). All three should use the same scale: be sure you use graph paper to help you with this.

B. Based on your boxplots, what can you conclude about the impact of logging in Borneo? In your conclusion, refer specifically to your boxplots and the information they give you. You should use the terminology of boxplots (minimum, first quartile, etc) in your response.

Answer 1

since in the above box plot in ans:(A) we clearly see that the number of trees growing on forest plots that had never been logged (Group A) having minimum =16 tree which is greater the Group(B) and Group(C) .

and the first quartile for group (A) =19, group(B) =12, and for group (C) it is the same since Group(A)'s first 25% contains more number of trees than group(B), group(C).

since logging is responsible for decreases the number of trees.