After analyzing the data presented by Peter and Rosemary Grant, I have come to familiarize myself with the data concerning the 100 medium ground finches born in 1973 and 1976. The excel file expresses 50 ground finches who did not survive, and 50 ground finches that did; while comparing their beak depth. Although there were some ground finches that had an adequately large beak depth, we can assume other weak physical factors were responsible for their death. The average beak of a 50 medium ground finches who died was 9.11mm, while those who survived had an average beak depth of 9.67mm.
Part B
1. A) If you drew a line following the top of all the bar graphs you can see that the distribution expresses a wavy line. The tops of the horizontal bars construct curves if connected. …show more content…
In addition, the graphs show that there is a greater number of birds that have a beak depth relatively close to the calculated average.
2. While analyzing the distribution of beaks between the survivors and nonsurvivors, you can immediately see that the graphs express a similar curvy line if the tops of the horizontal bars were connected. Non-surviving ground finches had beaks that ranged from 7.5 mm to 11.25 mm. The most common beak depths were between 9.25 mm and 9.75mm. However, ground finches that survived had beak depths ranging from 8mm to 11.25, and the most common measurements were between 10.25 mm to 10.75mm.
3. Based on what I saw in the film, one change in the environment that could have ultimate determined life or death for the ground finches was their shift of food source. Prior to the drought, the ground finches had small and soft seeds to consume, but during the drought they were limited to large hard seeds. It is possible that the ground finches with larger beaks survived because they were actually able to eat