Needle Length Lab Report

812 Words4 Pages
The average needle length varied from between 98.93 mm to 129.77 mm. The minimum needle length was measured on tree 5 and was 55 mm. The maximum needle length was measured on tree 7 and was 167 mm. The standard deviation ranged between 14.20 to 21.59 mm. More detailed data can be found in Table 1.1. Figure 1.2 plots average needle length per tree. The tree with the highest average needle length is tree 9. Figure 1.3 shows the relationship between minimum needle length and the nearest tree distance. The tree that was the second farthest away from another tree had the lowest measured needle length. The tree with the longest needle length was about an average distance from the nearest tree compared to the other trees. Figure 1.4 shows…show more content…
There are many factors and influences in the natural world that effect living organisms. In this study, we compared needle length to the distance to the nearest tree of the same species. There are many factors that can contribute to needle length and one of them could be how near or far the nearest tree of the same is. As stated above, needle length can vary within a single tree. That variation is accounted for by averaging out the needle lengths for each tree. As scene in figure 1.5, the relationship between average needle length and distance to the nearest tree has a down sloping relationship. The R2 value is .6245 which suggests a correlation between needle length and distance to the nearest tree. Although .6245 would be a low R2 value in a normal study, there are so many variables that cannot be control in this experiment that that R-value does show a correlation. Since the graph slopes downward, needle length gets shorter as the nearest tree gets farther away. Therefore, there is evidence that the closer the nearest tree is the more likely it is to cooperate with the nearest tree which results in longer needle

More about Needle Length Lab Report

Open Document